A data flow diagram (DFD) does not provide any information about process timing. T/F

Answers

Answer 1

Answer:

Step-by-step explanation:

True.

A Data Flow Diagram (DFD) is a graphical representation of a system or a process that shows how data flows through different components of the system. It provides a visual representation of the system's inputs, processes, and outputs.

While a DFD can provide information on the data that flows between the different components of a system, it does not provide any information about the timing or sequence of those processes. A DFD is a static diagram that only depicts the flow of data in a system and does not provide any indication of when or how frequently processes occur


Related Questions

the conditions that the sum of forces and the sum of the torques both vanish:

Answers

Answer and Explanation: The conditions when the net force and the net torque are zero are called static equilibrium.

i honestly hate sparx maths!!!!!!!!!!!

Answers

Answer:

4

Step-by-step explanation:

R + the 4 spaces to T

The older a child, the taller they are. Identify the relationship between age and height.
Select the correct answer below:
Age and height are negatively correlated.
The younger a child is, the shorter they are.
Correlation does not prove causation.
The taller a child is, the older they are.

Answers

Answer:

The correct answer is: Age and height are positively correlated.

Positive correlation means that as one variable increases, the other variable also increases. In this case, as a child ages, they also get taller. There are many factors that contribute to a child's height, including genetics, nutrition, and health. However, age is one of the most important factors.

Here are some additional details about the relationship between age and height:

The correlation between age and height is positive and strong. This means that there is a strong relationship between the two variables.

The correlation between age and height is linear. This means that the relationship between the two variables is straight.

The correlation between age and height is not perfect. This means that there are some children who are taller or shorter than expected for their age.

Overall, the relationship between age and height is positive and strong. This means that as a child ages, they also get taller.

Step-by-step explanation:

The temperatures (in degrees Fahrenheit) in Long Island recorded by the weather bureau over a week were 42, 49, 53, 55, 50, 47, and 52. Which measure should the weather bureau use to calculate how far apart the upper and lower quartiles of the week's daily temperatures were?
A
mode
B.
mean absolute deviation
C.
interquartile range
D.
mean

Answers

The interquartile range is the difference between the first (lower) quartile and third (upper) quartile. The first quartile is the value that is greater than 25% of the values in the data, and the third quartile is the value that is greater than 75% of the values in the data. The Interquartile range (IQR) is found by subtracting the lower quartile value from the upper quartile value. Hope this helps.

Which series of transformations correctly maps rectangle ABCD to rectangle LMNO?
O
Translate rectangle ABCD right 9 units, then dilate the result by a scale factor of centered at the
origin.
Reflect rectangle ABCD in the y-axis, then dilate the result by a scale factor of 3 centered at the
origin.
Rotate rectangle ABCD 90° clockwise about the origin, then dilate the result by a scale factor of
centered at the origin.
Dilate rectangle ABCD by a scale factor of 3 centered at the origin, then rotate the result 90°
clockwise about the origin.

Answers

The series of transformations that correctly maps rectangle ABCE to LMNO is: Translate rectangle ABCD right 9 units, then dilate the result by a scale factor of 3 centered at the origin.

How to explain the transformation

Based on the diagram, translation is by adding 9 to the x-coordinates of all the points in the rectangle.

Also,the dilation us by multiplying the coordinates of all the points in the translated rectangle A'B'C'D' by a factor of 3.

Hence, the series of transformations that correctly maps rectangle ABCE to LMNO is to teanslate rectangle ABCD right 9 units, then dilate the result by a scale factor of 3 centered at the origin.

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What is the sum of 4 and 5

Answers

Answer: 9

Step-by-step explanation: it just is

Answer:

9

Step-by-step explanation:

How do u not know what the sum of 4 and 5 is? I'm not trying to be mean I'm just wondering

Mrs. Jay has 22 games to put in a closet. She puts 4 of the games on the top shelf. She puts the rest of the games on the other 3 shelves. Each of the 3 shelves has the same number of games on it.

Answers

Answer:

6 games on each of the three shelves

Step-by-step explanation:

The total of  22 books minus the 4 books on the top shelf leaves 18 remaining books. You take that 18 and divide by 3 since there are three more shelves. This will leave you with a total of 6 books on each of the other shelves

22 - 4 = 18

18 / 3 = 6

if you have 100 meters of fencing and want to enclose a rectangular area up against a long, straight wall, what is the largest area you can enclose?

Answers

The largest area that can be enclosed with 100 meters of fencing is 1250 square meters.

To find the largest area that can be enclosed with 100 meters of fencing, we need to determine the dimensions of the rectangular area that would maximize the area.

Let's assume the length of the rectangle is L and the width is W. We are given that the total amount of fencing available is 100 meters, which means the perimeter of the rectangle should equal 100 meters:

2L + W = 100

To express the area of the rectangle in terms of L and W, we can use the formula:

Area = L * W

We want to maximize the area, so we can rewrite the equation in terms of a single variable using the perimeter equation:

W = 100 - 2L

Substituting this expression for W in the area equation:

Area = L * (100 - 2L)

Expanding and rearranging:

Area = 100L - 2L²

To find the maximum area, we can take the derivative of the area equation with respect to L and set it to zero:

d(Area)/dL = 100 - 4L = 0

Solving for L:

4L = 100

L = 25

Substituting this value back into the perimeter equation to find W:

W = 100 - 2L

= 100 - 2(25) = 50

Therefore, the dimensions of the rectangle that would maximize the area are L = 25 meters and W = 50 meters. To find the maximum area, we can substitute these values back into the area equation:

Area = L * W = 25 * 50 = 1250 square meters

Thus, the largest area that can be enclosed with 100 meters of fencing is 1250 square meters.

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HELP FAST FOR BRAINIEST FOR FIRST GUY

Answers

Answer:

Solution C HOPE THIS HELPS! Have A nice day

Step-by-step explanation:

According to the plot, the spread of the data is

A. 21 to 29 years

What is spread of data?

The spread of data is also known as data dispersion or variability. this refers to the extent to which data points are scattered or spread out around the central tendency (such as the mean or median) in a dataset.

It provides information about the distribution and the degree of variability within the dataset. there are several common measures used to describe the spread of data

The range is the simplest measure of spread and represents the difference between the largest and smallest values in the dataset.

This is used hear and the highest is 29 years while the lowest is 21 years hence making a the best choice

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Write an equation in​ slope-intercept form for the line where x is the number of hours the kayak is rented and y is the total cost of renting the kayak.

Answers

Slope is:

S=rise/run

S=Y/X

question 7 a data analyst has to create a visualization that makes it easy to show which of the top ten most populous cities in north carolina have a population below 250,000 people. what type of chart would be best for this visualization?

Answers

For this visualization, a bar chart would be the best choice.

A bar chart is an effective way to visually compare different categories or groups. In this case, the data analyst can create a bar chart where each bar represents a city, and the height of the bar corresponds to the population of that city. The analyst can include only the top ten most populous cities in North Carolina and color the bars differently based on whether the population is below or above 250,000 people. By doing so, it becomes easy to identify which cities fall below the threshold, as they will have shorter bars compared to those above the threshold. The clear distinction between the bar heights allows for quick visual comparison and provides a straightforward representation of the population distribution among the top ten cities in North Carolina.

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A cube with wedges exactly 2cm long is made of material with a bulk modulus of 3.5 x 10^9 N/m^2. When it is subjected to a pressure of 3.0x10^5 Pa its volume is

Answers

Rounding to the appropriate number of significant figures, the final volume of the cube is 7.99x10^-6 m^3.

The change in volume of a material under pressure can be calculated using the formula:

ΔV/V = -P/β

where:

ΔV = change in volume

V = original volume

P = pressure

β = bulk modulus

In this case, the original volume of the cube is (2cm)^3 = 8cm^3 = 8x10^-6 m^3.

Plugging in the given values, we get:

ΔV/V = -P/β

ΔV/8x10^-6 = -(3.0x10^5)/(3.5x10^9)

ΔV = -8.57x10^-11 m^3

Therefore, the final volume of the cube is:

V + ΔV = 8x10^-6 - 8.57x10^-11 = 7.99143x10^-6 m^3

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Find tan 0, where 0 is the angle shown.

Give an exact value, not a decimal approximation.

Answers

The exact value of tan(tetha) is 4/3

What is trigonometric ratio?

The trigonometric functions are real functions which relate an angle of a right-angled triangle to ratios of two side lengths.

Sin(tetha) = opp/hyp

cos(tetha) = adj/hyp

tan(tetha) = opp/adj

The hypotenuse is the side facing the right angle and the opposite is the side facing the acute angle and the adjascent is the third side.

The opposite side = √ 5²-3²

= √ 25 -9

= √16

= 4

Therefore ;

Tan(tetha) = 4/3

the exact value of tan(tetha) is 4/3

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Given right triangle ABC, find the value of hypotenuse, a, and the measures of angle B and angle C.
Hypotenuse is a
5
11
A=
m m

Answers

Answer:

Therefore

a=12

<B=66°

<C=24°

Step-by-step explanation:

Hyp²=opp²+adj²

x²=5²+11²

x²=25+121

x²=126

[tex] \sqrt{ {x}^{2} } = \sqrt{146} [/tex]

x=12

sinß=opp/hyp

sinß=11/12

[tex] \beta = { \sin( \frac{11}{12} ) }^{ - 1} [/tex]

ß=66°

<A+<B+<C=180°

90+66+<C=180

<C+156=180

<C=180-156

<C=24°

If it takes 4 men 6 hours to repair a road, how long will it take 7 men to do the job if they work at the same rate?
2
3 hours
x A
4x
4x
B
C
D
5
3/1/724
3 hours
4/7/1
hours
3
3 hours
7
E 2 hours

Answers

It will take 7 men 42 hours to complete the job if they work at the same rate.

If it takes 4 men 6 hours to repair a road, it means that the total work done is 1 job.

The number of man-hours required to complete the job is the product of the number of men and the number of hours

= 4 men x 6 hours

= 24 man-hours

Now, let's find out how many hours it will take for 7 men to do the same job. We can set up a proportion using the man-hours:

4 men / 24 hours = 7 men / x hours

4x = 7 (240)

4x = 168

x = 168 / 4

x = 42

Therefore, it will take 7 men 42 hours to complete the job if they work at the same rate.

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Points D(2; 5), E (-4;-4), F(0; 2) and G(-4:9) are given.Find MED and MEF. What can you conclude about points D, Ea nd F?​

Answers

Answer:

(If you like this answer i would appreciate if u give brainliest but otherwise, i hope this helped ^^)

Step-by-step explanation:

To find MED, we can use the distance formula between points D and E:

MED = √[(x2 - x1)^2 + (y2 - y1)^2]

Using the coordinates for points D and E:

MED = √[(-4 - 2)^2 + (-4 - 5)^2]

= √[(-6)^2 + (-9)^2]

= √[36 + 81]

= √117

≈ 10.82

To find MEF, we can use the distance formula between points E and F:

MEF = √[(x2 - x1)^2 + (y2 - y1)^2]

Using the coordinates for points E and F:

MEF = √[(0 - (-4))^2 + (2 - (-4))^2]

= √[(4)^2 + (6)^2]

= √[16 + 36]

= √52

≈ 7.21

Based on these calculations, we can conclude that:

The distance between points D and E (MED) is approximately 10.82 units.

The distance between points E and F (MEF) is approximately 7.21 units.

As for the points D, E, and F, we can conclude that they do not form a straight line since the distances between them (MED and MEF) are different. They are likely to be non-collinear points.

Evaluate the function f(x) = |x| at each value of x
3-π

Answers

Answer:

  ≈ 0.14159265359

Step-by-step explanation:

You want the value of f(x) = |x| when x = 3-π.

Function value

The function value is ...

  f(3-π) = |3-π| ≈ |-0.14159265359| = 0.14159265359

The absolute value function changes the sign from negative to positive. Pi is irrational, so the actual value is irrational. It is rounded up to the value shown.

<95141404393>

What is m/XWZ, in degrees?
V
Z
62.5⁰
AY
X

Answers

The value of angle XWZ is 117.5°

What is angle on a straight line?

Angles on a straight line relate to the sum of angles that can be arranged together so that they form a straight line.

The sum of angles on a straight line is 180°. This means that if there angles A, B, C lie on a straight line, therefore ;

A+B + C = 180°

angle XWY is 90° and angle VWZ Iis 62.5°

therefore to find angle XWZ

ZWY= 90- 62.5

= 27.5°

Therefore angle XWZ = 90+ 27.5°

= 117.5°

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find the points on the ellipse 4x^2+y^2=4 that are farthest away from the point (1 0)

Answers

So the points on the ellipse that are farthest away from the point (1,0) are: (1/15)(2 + sqrt(394)), ±sqrt(4 - 4(1/15)(2 + sqrt(394))^2 )and (1/15)(2 - sqrt(394)), ±sqrt(4 - 4(1/15)(2 - sqrt(394))^2).

We want to find the points on the ellipse that are farthest away from the point (1,0). The distance between two points (x1, y1) and (x2, y2) is given by the distance formula:

d = sqrt((x2 - x1)^2 + (y2 - y1)^2)

So, we need to maximize the distance d, subject to the constraint that the point (x, y) lies on the ellipse 4x^2 + y^2 = 4.

Using Lagrange multipliers, we set up the following system of equations:

f(x, y) = (x - 1)^2 + y^2 = λg(x, y) = λ(4x^2 + y^2 - 4)

Taking the partial derivatives with respect to x, y, and λ, we get:

fx = 2(x - 1) = 8λx

fy = 2y = 2λy

g(x, y) = 4x^2 + y^2 - 4 = 0

From the second equation, we can see that y = 0 or λ = 1. If y = 0, then the first equation simplifies to:

(x - 1)^2 = λ(4x^2 - 4)

Solving for λ and substituting into the equation for g(x,y), we get:

4x^2 - (x - 1)^2 - 4 = 0

Simplifying, we get:

15x^2 - 2x - 11 = 0

Using the quadratic formula, we get:

x = (1/15)(2 ± sqrt(394))

Substituting into the equation for the ellipse, we get the corresponding y-values:

y = ±sqrt(4 - 4x^2)

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How many hamburgers could you reasonably eat at a single picnic? It is
measured in the
A. thousands
OB. tens
O C. hundreds
OD. ones

Answers

The reasonable amount that could be eaten would be in the ones.

5. Suppose you find seven articles related to the topic of your research paper.
In how many ways can you choose five articles to read?
Put your answer in the form [XX].

Answers

The number of ways to choose five articles to read is given as follows:

21 ways.

What is the combination formula?

The number of different combinations of x objects from a set of n elements is obtained with the formula presented as follows, using factorials.

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

The combination formula is used in the context of this problem as the order in which the articles are read does not matter.

Five articles are chosen from a set of seven, hence the number of ways to choose the articles is given as follows:

[tex]C_{7,5} = \frac{7!}{5!2!} = 21[/tex]

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the box plot shows the leg lengths, in millimeters, of a sample of insects. what is the range of lengths of the insects?

Answers

The distance between the lower whisker and the minimum value and the distance between the upper whisker and the maximum value indicate the range of the leg lengths of the insects in millimeters.


A box plot, also known as a box-and-whisker plot, is a graphical representation of a dataset that displays the distribution of a continuous variable. It shows the minimum and maximum values, the first and third quartiles, and the median of the data. The length of the box in a box plot represents the interquartile range (IQR), which is the range between the first and third quartiles. The whiskers extend from the box to show the range of the data, excluding outliers.
In the context of the question, the box plot displays the leg lengths, in millimeters, of a sample of insects. To determine the range of lengths of the insects, we need to examine the whiskers of the box plot. The whiskers extend from the box to the minimum and maximum values of the dataset, and their length represents the range of the data.
Therefore, to answer the question, we need to look at the length of the whiskers in the box plot.
In conclusion, the range of lengths of the insects can be determined by looking at the length of the whiskers in the box plot. The answer will depend on the specific values displayed in the plot.

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The owner of a store buys a wooden branch for two dollars is Shemar up the place by 75% at the end of the season she sells the meaning branches for 30% off how much profit does the owner make on each branch at the end of the season

Answers

Let's calculate the profit made by the owner on each branch at the end of the season. The owner buys a wooden branch for $2. After marking up the price by 75%, the selling price becomes:

$2 + ($2 * 0.75) = $2 + $1.50 = $3.50

However, at the end of the season, the owner sells the branches for 30% off. So the selling price after the discount is:

$3.50 - ($3.50 * 0.30) = $3.50 - $1.05 = $2.45

To calculate the profit made on each branch, we subtract the original cost from the selling price:

$2.45 - $2 = $0.45

Therefore, the owner makes a profit of $0.45 on each branch at the end of the season.

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Find the sum of (x3 + 12x2 – 5x + 4) + (2x3 – 5x2 – 14).

Answers

Answer:

3x^3 + 7x^2 - 5x - 10

Step-by-step explanation:

In order to find the sum, we need to add all of the like terms together between the two polynomials.

[tex](x^3+12x^2-5x+4)+(2x^3-5x^2-14)[/tex]

Lets begin with x^3 terms. There is a 1 in front of the x, so 2 + 1 = 3

[tex]3x^3[/tex]

Now x^2 terms. 12 - 5 = 7

[tex]3x^3+7x^2[/tex]

We can keep x terms the same since there is no x terms in the second polynomial.

[tex]3x^3+7x^2-5x[/tex]

Finally integers. -14 + 4 = -10

[tex]3x^3+7x^2-5x-10[/tex]

HELP NOW PLEASE ON A TIME LIMIT!!!! Complete
1. Lines that have (blank) slopes and intersect at (blank) point have (blank) solution.
2. Lines that have the (blank) slope and different y-intercepts ( they do not intersect )have (blank).
solution.
3. Lines that have (blank) slope and the same y-intercepts have (blank) solutions.

Please fill in the blanks with the options two word will be used more than once

Same. Different. One. No. Infinitely many.

Answers

1. Lines that have different slopes and intersect at one point have one solution.

2. Lines that have the same slope and different y-intercepts (they do not intersect) have no solution.

3. Lines that have the same slope and the same y-intercepts have infinitely many solutions.

Help me please need this done

Answers

A and B
Anytime you see a negative inside a square root, that is irrational and is an imaginary number. You cannot multiply two of the same number together to get a negative inside the square root

1 pencil and 2 erasers cost $0.14, 2 pencils and 3 erasers cost $0.24 What's the cost of i.) 1 pencil and 1 eraser ii)3 pencils and 5 erasers Use simultaneous equations​

Answers

I pencil = $0.06
1 eraser = $0.04

3 pencils = $0.18
5 erasers=$0.2
Hope it helps

The cost of 1 pencil and 1 eraser is $0.10 and 3 pencils and 5 erasers is $0.38.

To clear up this problem, we are able to use simultaneous equations to locate the value of 1 pencil and 1 eraser. Let x be the price of 1 pencil and y be the price of 1 eraser. Then we are able to write  equations based totally on the given records:

1x + 2y = 0.14 and 2x + 3y = 0.24

To take away y, we can multiply the first equation by using -3 and add it to the second equation:

-3x - 6y = -0.42 and  2x + 3y = 0.24

-x - 3y = -0.18

Then we can divide both sides by way of -1 to get:

x + 3y = 0.18

To dispose of x, we are able to multiply the first equation through -2 and upload it to the second equation:

-2x - 4y = -0.28 and  2x + 3y = 0.24

-y = -0.04

Then we are able to divide both sides by -1 to get:

y = 0.04

This method that one eraser fee of $0.04. To locate the cost of one pencil, we can replace y in both equations. For instance, the usage of the primary equation:

1x + 2(0.04) = 0.14

1x + 0.08 = 0.14

1x = 0.14

- 0.08 1x = 0.06

This approach is that one pencil is priced at $006.

Therefore, the cost of:

i.) one pencil and one eraser is $0.06 + $0.04 = $0.10

ii.) 3 pencils and 5 erasers is 3($0.06) + 5($0.04) = $0.18 + $0.20 = $0.38.

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Given Triangle ABC, whose vertices are A(-4,4) B(2,0) and C(-1,-4). Which ordered pair gives the coordinates of P, the point of concurrency, of the medians?
A P(-1,0)
B P(-2,1)
C P(0,-1)
D P(-2,-1)

Answers

The concurrency of the median of the triangle is P ( -1 , 0 )

Given data ,

Let the triangle be represented as ΔABC

Now , the coordinates of the triangle are A(-4,4) B(2,0) and C(-1,-4)

On simplifying , we get

Midpoint of AB:

x-coordinate: (x₁ + x₂) / 2 = (-4 + 2) / 2 = -1

y-coordinate: (y₁ + y₂) / 2 = (4 + 0) / 2 = 4/2 = 2

Midpoint of BC:

x-coordinate: (x₂ + x₃) / 2 = (2 + (-1)) / 2 = 1/2 = 0.5

y-coordinate: (y₂ + y₃) / 2 = (0 + (-4)) / 2 = -4/2 = -2

Midpoint of AC:

x-coordinate: (x₁ + x₃) / 2 = (-4 + (-1)) / 2 = -5/2 = -2.5

y-coordinate: (y₁ + y₃) / 2 = (4 + (-4)) / 2 = 0

Now, we have the midpoints of the sides of the triangle:

Midpoint of AB: (-1, 2)

Midpoint of BC: (0.5, -2)

Midpoint of AC: (-2.5, 0)

The point of concurrency of the medians is the centroid of the triangle, which can be found by taking the average of the midpoints.

x-coordinate: (-1 + 0.5 - 2.5) / 3 = -3 / 3 = -1

y-coordinate: (2 - 2 - 0) / 3 = 0

Hence , the coordinates of point P, the point of concurrency of the medians, are P(-1, 0)

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Find the radius of convergence, R, of the series (-1)nx" n-1 Find the interval, I, of convergence of the series. (Enter your answer using interval notation.) Need Help? RaItTalk to a Tutor Read It 5. + --2 points scalc8 11.8.007 MI Find the radius of convergence, R, of the series. xn+ 5 R= Find the interval, I, of convergence of the series. (Enter your answer using interval notation.) Watch ItMaster It Talk to a Tutor Need Help? Read it Submit Answer Save ProgressPractice Another Version

Answers

The radius of convergence, R, of the series (-1)nx^n-1 can be found using the ratio test the interval of convergence is (-1, 1) in interval notation. .

We have
lim |(-1)^(n+1)x^(n) / (-1)^nx^(n-1)| as n approaches infinity
= lim |x|

Since the limit exists only when |x| < 1, the radius of convergence is R = 1.
To find the interval of convergence, we need to check the endpoints x = -1 and x = 1.
When x = -1, the series becomes (-1)^n(-1)^n-1 = (-1)^2n-1 which diverges.

When x = 1, the series becomes (-1)^n1^n-1 = (-1)^(n-1) which also diverges.
Therefore, the interval of convergence is (-1, 1) in interval notation.

Note that the endpoints are not included in the interval of convergence because the series diverges at those points.

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The radius of convergence is R = 1 and the interval of convergence is (-1, 1).

To find the radius of convergence, we can use the ratio test:
lim┬(n→∞)⁡|(-1)^(n+1)x^n|/|(-1)^(n)x^(n-1)| = lim┬(n→∞)⁡|x|/1 = |x|
The series converges if |x| < 1 and diverges if |x| > 1. So the radius of convergence is R = 1.
To find the interval of convergence, we need to test the endpoints x = -1 and x = 1. When x = -1, the series becomes (-1)^n(-1)^n = 1, which is a divergent series. When x = 1, the series becomes (-1)^n, which is an oscillating series that does not converge.
Therefore, the interval of convergence is (-1, 1), where -1 is excluded and 1 is included, since the series converges for -1 < x < 1 and diverges for x ≤ -1 and x ≥ 1.
In summary, the radius of convergence is R = 1 and the interval of convergence is (-1, 1).

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the health center at a college is trying to estimate what proportion of students are experiencing depression or anxiety. the health center will use a confidence level of 95% and a margin of error of 5%. prior research shows that the prevalence of mental illness in college students is about 15%.

Answers

The health center needs to survey approximately 196 students to estimate the proportion of students experiencing depression or anxiety with a 95% confidence level and a margin of error of 5%.

To estimate the proportion of students experiencing depression or anxiety, the health center at the college will need to conduct a survey of a random sample of students. With a confidence level of 95%, they can be 95% confident that the true proportion of students experiencing depression or anxiety falls within the range of the estimated proportion plus or minus the margin of error of 5%.

To determine the sample size needed for the survey, the health center will need to use a formula that takes into account the population size (number of students at the college), the desired confidence level, and the margin of error. With a population size of, say, 10,000 students, the sample size needed would be around 385 students.

If prior research shows that the prevalence of mental illness in college students is about 15%, then the health center can expect the proportion of students in their sample experiencing depression or anxiety to be around 15%. However, with the margin of error of 5%, the estimated proportion could range from 10% to 20%.

Overall, by conducting a survey with a random sample of students and using a confidence level of 95% and a margin of error of 5%, the health center at the college can estimate with a high degree of confidence the proportion of students experiencing depression or anxiety.


To estimate the proportion of students experiencing depression or anxiety at the college, the health center can follow these steps:

1. Use the prior research that shows the prevalence of mental illness in college students is about 15%. This will be used as the initial proportion (p) for the calculation.

2. Determine the desired confidence level (95%) and margin of error (5%). In this case, the confidence level is 95%, which corresponds to a z-score of 1.96 for a standard normal distribution. The margin of error is 5% (0.05).

3. Calculate the sample size required for the estimation using the formula:

n = (Z^2 * p * (1-p)) / E^2

where n is the sample size, Z is the z-score (1.96 for 95% confidence level), p is the initial proportion (0.15), and E is the margin of error (0.05).

4. Plug in the values and calculate the sample size:

n = (1.96^2 * 0.15 * (1-0.15)) / 0.05^2
n ≈ 196

Learn more about margin of error at: brainly.com/question/29419047

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