if is an invertible matrix that is orthogonally diagonalizable, show that is orthogonally diagonalizable.

If the equation of the line that contains diagonal MT is y = -2x + 3, the equation of the line that contains diagonal AH is y = -2x + 3.

In a rhombus, the diagonals intersect at a 90-degree angle and bisect each other. Therefore, if the point of intersection of the diagonals is known, we can find the equations of the diagonals by using the midpoint formula and the slope formula.

To find the equation of the diagonal that contains point A, we first need to find the coordinates of point A. Since the diagonals bisect each other, point A is the midpoint of diagonal MT. We can use the midpoint formula to find the coordinates of point A:

x = (x₁ + x₂)/2 and y = (y₁ + y₂)/2

x = (4 + x₂)/2 and y = (-5 + y₂)/2

Multiplying both sides by 2, we have:

2x = 4 + x₂ and 2y = -5 + y₂

Simplifying, we have:

x₂ = 2x - 4 and y₂ = 2y + 5

Now, we can use the slope formula to find the slope of the diagonal AH. Since diagonal MT has a slope of -2, we know that the product of the slopes of the diagonals of a rhombus is -1. Therefore, the slope of diagonal AH is:

m = 1/2 = -1/m'

where m' is the slope of the line that contains diagonal AH.

Solving for m', we have:

m' = -2

Now we have the slope and a point on the diagonal AH (point A). We can use the point-slope form of the equation of a line to find the equation of diagonal AH:

y - (-5) = -2(x - 4)

y + 5 = -2x + 8

y = -2x + 3

In conclusion, we can find the equation of the diagonal that contains point A in a rhombus by using the midpoint formula and the slope formula. Since the diagonals of a rhombus bisect each other and are perpendicular, we can use this information to find the equation of the second diagonal once we know the equation of the first diagonal.

To learn more about rhombus click on,

https://brainly.com/question/23032581

#SPJ1

Answer:

Step-by-step explanation:

Let's start by finding out how much soup was initially in the pot. We know that Erin, Shelby, and all 8 of their children ate some soup, but we don't know how much.

If we add up the amounts left in the bowls, we can find out how much soup they didn't eat:

3 kids left 3/4 cup each = 3 * 3/4 = 9/4 cups

2 kids left 1/4 cup each = 2 * 1/4 = 1/2 cup

3 kids left 1/2 cup each = 3 * 1/2 = 3/2 cups

Adding these amounts together:

9/4 + 1/2 + 3/2 = 5 cups

So they left 5 cups of soup in their bowls.

If we assume that each person had one serving of soup (even though some left some in their bowls), and that each serving was the same size, then the amount of soup they didn't eat is equal to the amount of soup that was left in the pot.

So, the amount of soup left over is 5 cups.

Based on the given information, we can assume that the survey has a 95% confidence level, which means that the margin of error can be calculated using the formula:

Margin of Error = (maximum difference in percentage points / 2)

The maximum difference in percentage points between the two candidates is 53% - 47% = 6%. Dividing this by 2 gives us a margin of error of 3%. Therefore, we can say that the results of the phone survey indicate that between 44% and 56% of voters may choose candidate a over candidate b (with a margin of error of +/- 3%).

To know more about margin of error, visit:

https://brainly.com/question/31291448

#SPJ11

Answer:

This is a long one

Step-by-step explanation:

a.) The Y-Intercept is 6000. It shows the exact point when the skydiver jumped out of the plane.

b.) -1500   The slope is negative, therefore the skydiver is falling. (WRITE THIS AS A FRACTION)

c.) The X-intercept is 4. This represents the ground where the skydiver will land.

d.) y=(-1500)x+6000

The numerator and denominator is D. 3 and 116.

In fractions, the numerator and denominator are the two constituent parts. They comprise fractions, in other words. A fraction's top digit is always referred to as the numerator. It displays the quantity of our parts. A fraction's numerator—the lowest digit—is referred to as the denominator. It displays the overall number of pieces that something can be broken down into.

For an ANOVA procedure with k groups (in this case, k=4), the degrees of freedom for the numerator and denominator of the F-statistic are given by:

- Numerator degrees of freedom: k-1

- Denominator degrees of freedom: n-k, where n is the total sample size (in this case, n=4*30=120)

Therefore, for the given ANOVA procedure with four samples of 30 observations each, the numerator and denominator degrees of freedom for the critical value of F are:

- Numerator degrees of freedom: 4-1 = 3

- Denominator degrees of freedom: 120-4 = 116

So the answer is D. 3 and 116.

Learn more about ANOVA procedure on:

https://brainly.com/question/14984889

#SPJ4

If we take a random sample of 603 women-owned businesses, we can be 90% confident that the estimated proportion of businesses providing health insurance will be within 3 percentage points of the true population proportion.

To determine the sample size needed to estimate a population proportion with a specified margin of error, we can use the formula:

n = ([tex]z^2[/tex] * p * (1-p)) /[tex]E^2[/tex]

where:

n = sample size

z = z-score for the desired confidence level (1.645 for 90% confidence)

p = estimated population proportion (0.676 in this case)

E = margin of error (0.03 or 3 percentage points)

Substituting the given values, we get:

[tex]n = (1.645^2 * 0.676 * (1-0.676)) / 0.03^2[/tex]

n = 602.36

Rounding up to the nearest integer, we get a required sample size of 603. Therefore, if we take a random sample of 603 women-owned businesses, we can be 90% confident that the estimated proportion of businesses providing health insurance will be within 3 percentage points of the true population proportion.

Learn more about sample size

https://brainly.com/question/30885988

#SPJ4

Yes, it is true that if A is a 3×3 matrix and the equation Ax = [1, 0, 0] has a

unique solution, then A is invertible.

To see why, suppose that A is not invertible.

Then there exists a non-zero vector v such that Av = 0.

Multiplying both sides of the equation Ax = [1, 0, 0] by v, we get Av = 0,

which means that the equation has no solution or infinitely many solutions,

contradicting the assumption that it has a unique solution.

Therefore, if the equation Ax = [1, 0, 0] has a unique solution, then A must

be invertible.

for such more question on  invertible

https://brainly.com/question/31043586

#SPJ11

ICD-10 is a coding system used to classify diseases and medical conditions. One of the conditions that can be classified using this system is rheumatoid arthritis,

which is a chronic autoimmune disease that causes inflammation in the joints. When rheumatoid arthritis involves multiple sites, it means that it affects more than one joint in the body.

Rheumatoid arthritis is a common condition that affects millions of people worldwide. It can affect any joint in the body, but it most commonly affects the hands, wrists, and feet. When it involves multiple sites, it can cause pain and stiffness in many different joints, including the knees, hips, shoulders, and spine.

The symptoms of rheumatoid arthritis involving multiple sites can vary from person to person. Some people may experience mild pain and stiffness, while others may have more severe symptoms that affect their ability to perform daily activities. In some cases, rheumatoid arthritis can also cause fatigue, fever, and weight loss.

Treatment for rheumatoid arthritis involving multiple sites typically involves a combination of medication, physical therapy, and lifestyle changes. Medications such as nonsteroidal anti-inflammatory drugs (NSAIDs), disease-modifying antirheumatic drugs (DMARDs), and biologics can help to reduce inflammation and pain.

Physical therapy can help to improve joint mobility and reduce stiffness. Lifestyle changes such as exercise, weight loss, and stress reduction can also be beneficial.

In conclusion, rheumatoid arthritis involving multiple sites is a chronic autoimmune disease that causes inflammation in more than one joint in the body. It can cause a range of symptoms, from mild pain and stiffness to more severe joint damage. Treatment typically involves a combination of medication, physical therapy, and lifestyle changes.

To know more about loss  click here

brainly.com/question/29058365

#SPJ11

we can expect a typical shopper to visit the store about 6 times in a 30-day period, on average.

What is the average?

This is the arithmetic mean and is calculated by adding a group of numbers and then dividing by the count of those numbers. For example, the average of 2, 3, 3, 5, 7, and 10 is 30 divided by 6, which is 5.

If we assume that a typical shopper makes an average of 36 trips to the store over a 180-day period, we can use the Poisson distribution to calculate the expected number of trips in a 30-day period.

The Poisson distribution describes the probability of a certain number of events occurring in a fixed interval of time or space, given the average rate at which they occur. In this case, we can use the Poisson distribution to model the number of trips a typical shopper makes to the store in a 30-day period, given the average rate of 36 trips over 180 days.

The formula for the Poisson distribution is:

[tex]P(X = k) = (\lambda^k * e^{(-\lambda)}) / k![/tex]

where:

X is the number of events (in this case, trips to the store)

λ is the average rate of events per interval (in this case, 36 trips over 180 days)

k is the number of events we want to calculate the probability for

To find the expected number of trips in a 30-day period, we can set λ equal to the average rate of trips per day (i.e., 36 trips / 180 days = 0.2 trips per day), and k equal to the number of days in a 30-day period (i.e., 30 days).

So, the expected number of trips a typical shopper makes to the store in a 30-day period is:

λ = 0.2 trips per day * 30 days = 6 trips

Therefore, we can expect a typical shopper to visit the store about 6 times in a 30-day period, on average.

To learn more about the average visit:

https://brainly.com/question/20118982

#SPJ4

kelly  clark has different books to arrange on a shelf: 4 blue, 3 green, and 2 red  The books can be arranged on a shelf in 9!/(4!3!2!) = 1260 ways

(a) The books can be arranged on a shelf in 9!/(4!3!2!) = 1260 ways.

(b) If books of the same color are to be grouped together, we can treat each group as a single "super book." Then, there are 3! = 6 ways to arrange the three "super books" on the shelf. Within each group, the books can be arranged in the same number of ways as in part (a), so the total number of arrangements is 6 x 4!/(2!) = 144.

(c) There are 4 ways to choose a blue book, 3 ways to choose a green book, and 2 ways to choose a red book, for a total of 4 x 3 x 2 = 24 ways.

(d) There are 4 ways to choose a first book, 3 ways to choose a second book (since one color has already been chosen), and 2 ways to choose a third book (since two colors have already been chosen), for a total of 4 x 3 x 2 = 24 ways.

To learn more about book visit:

brainly.com/question/28339193

#SPJ11

Answer:

do the opposite

Step-by-step explanation:

multiply 8 times 4(instead of dividing)

x= 32

For the [tex]sin^{-1}x[/tex], domain is [-1, 1], and range is [[tex]-\pi /2, \pi /2[/tex]] .

For the [tex]cos^{-1}x[/tex], domain is [-1, 1], and range is [[tex]0, \pi[/tex]] .

For the [tex]tan^{-1}x[/tex], domain is [-∞, ∞], and range is [[tex]-\pi /2, \pi /2[/tex]] .

A function has its inverse only if it is a bijective function.

Sine function is always restricted in its domain [[tex]-\pi /2, \pi /2[/tex]]  and range [-1, 1], thus [tex]sin^{-1}x[/tex] will have domain is [-1, 1], and range is [[tex]-\pi /2, \pi /2[/tex]] .

Cosine function is always restricted in its domain [[tex]0, \pi[/tex]]  and range [-1, 1], thus [tex]cos^{-1}x[/tex]  , will have domain is [-1, 1], and range is  [[tex]0, \pi[/tex]] .

Tangent function is always restricted in its domain [[tex]-\pi /2, \pi /2[/tex]] and range  [-∞, ∞]. Thus [tex]tan^{-1}x[/tex], will have domain is [-∞, ∞], and range is [[tex]-\pi /2, \pi /2[/tex]] .

To know more about Tangent  refer the link https://brainly.com/question/19064965

#SPJ4

The dimensions of the rectangular sticker with perimeter of 20 centimeters and area of 21 square centimeters are either 3 cm by 7 cm or 7 cm by 3 cm.

To find the dimensions of the rectangular sticker, we need to use the given information about its perimeter and area. Let's start by using the formula for perimeter of a rectangle:

Perimeter = 2(length + width)

We know that the perimeter of the sticker is 20 centimeters, so we can write:

20 = 2(length + width)

Simplifying this equation, we get:

length + width = 10

Now let's use the formula for area of a rectangle:

Area = length x width

We know that the area of the sticker is 21 square centimeters, so we can write:

21 = length x width

We now have two equations with two variables (length and width). We can use substitution to solve for one of the variables. Let's solve for width in terms of length using the perimeter equation:

width = 10 - length

Now we can substitute this expression for width into the area equation:

21 = length x (10 - length)

Expanding the right side, we get:

21 = 10 length - length^2

Rearranging and simplifying, we get a quadratic equation:

length^2 - 10 length + 21 = 0

We can solve this quadratic equation using factoring or the quadratic formula. Factoring gives us:

(length - 3)(length - 7) = 0

So the possible values for length are 3 and 7. If we plug these values into the width equation, we get:

width = 10 - length

For length = 3, width = 7
For length = 7, width = 3

Learn more about variables here:

brainly.com/question/25894237

#SPJ11

The  focus of the last six lines of the poem "She Walks in Beauty" by Lord Byron is on the internal beauty and goodness of the subject, while the focus of the opening lines is on her external, physical beauty.

The opening lines, the poet describes the woman's external appearance and how it is in harmony with her inner goodness. However, in the last six lines, the poet shifts the focus to the woman's character and inner qualities, describing her as having a heart that is pure, peaceful, and full of love. This shift in focus reflects the poet's deeper appreciation for the woman's true beauty beyond just her physical appearance.


In contrast, the last six lines shift the focus to the woman's inner beauty, highlighting her purity of heart and mind. This is shown in lines like "A mind at peace with all below / A heart whose love is innocent." Here, the poet appreciates not only her appearance but also her inner qualities, which make her even more beautiful.

To know more about Lord Byron visit:

brainly.com/question/6111152

#SPJ11

Answer:

Here is the sample space:

(1, 1), (1, 2) (1, 3), (2, 1), (2, 2), (2, 3), (3, 1),

(3, 2), (3, 3)

Answer:

84

Step-by-step explanation:

A= Bh

Base is 12

Height is 7

= 84

Answer:

84

Step-by-step explanation:

a. A tea bag is considered small if it weighs less than 2.626 grams.

b. The probability that it weighs at least 2.25 grams is 17.07%.

The probability of an event occurring is defined by probability. There are many instances in real life where we may need to make predictions about how something will turn out. The outcome of an event may be known to us or unknown to us. When this happens, we say that there is a chance that the event will happen or not.

(a) Let X be the weight of a tea bag. Then X ~ N(3.5, 0.53²). We want to find the value of w such that P(X < w) = 0.052. Using the standard normal distribution, we have:

(P(X < w) - P(X < 3.5)) / 0.53 = z

where z is the 0.052 quantile of the standard normal distribution. Using a standard normal table or calculator, we find that z ≈ -1.645. Substituting the values and solving for w, we get:

(w - 3.5) / 0.53 = -1.645

w - 3.5 = -0.874

w ≈ 2.626

Therefore, a tea bag is considered small if it weighs less than 2.626 grams.

(b) We want to find P(X ≥ 2.25 | X < 2.626), which is the conditional probability that a selected tea bag weighs at least 2.25 grams given that it is small. Using the properties of the normal distribution, we have:

P(X ≥ 2.25 | X < 2.626) = P((X - 3.5) / 0.53 ≥ (2.25 - 3.5) / 0.53 | (X - 3.5) / 0.53 < (2.626 - 3.5) / 0.53)

= P(Z ≥ -2.358 | Z < -1.566)

where Z is a standard normal random variable. Using a standard normal table or calculator, we find that:

P(Z ≥ -2.358) ≈ 0.990

P(Z < -1.566) ≈ 0.058

Therefore, P(X ≥ 2.25 | X < 2.626) ≈ 0.990 / 0.058 ≈ 17.07%.

Learn more about probability on:

https://brainly.com/question/13604758

#SPJ4

The pattern that occurs d⁹⁵/dx⁹⁵ sin(x)  is -cos(x)

To find the derivative of d^95/dx^95 sin(x), we can use the fact that the derivative of sin(x) is cos(x) and that the derivative of cos(x) is -sin(x). Therefore, the pattern for the derivatives of sin(x) is:

d/dx sin(x) = cos(x)

d²/dx² sin(x) = -sin(x)

d³/dx³ sin(x) = -cos(x)

d⁴/dx⁴ sin(x) = sin(x)

d⁵/dx⁵ sin(x) = cos(x)

d⁶/dx⁶ sin(x) = -sin(x)

d⁷/dx⁷ sin(x) = -cos(x)

d⁸/dx⁸ sin(x) = sin(x)

We can see that this pattern repeats every 4 derivatives. Therefore, we can simplify the expression d^95/dx^95 sin(x) by dividing 95 by 4 and finding the remainder:

95 ÷ 4 = 23 remainder 3

This tells us that the 95th derivative of sin(x) will be the same as the third derivative of sin(x), which is:

d⁹⁵/dx⁹⁵ sin(x) = d³/dx³ sin(x)

= -cos(x)

Therefore,  the pattern that occurs d⁹⁵/dx⁹⁵ sin(x) is -cos(x).

To know more about derivative check the below link:

https://brainly.com/question/31399608

#SPJ4

The digit 4 in 8.4 has a value of 0.4, which is indeed 1/10 the value of the digit 4 in 7.4.

The digit 4 in the number 7.4 has a value of 4 tenths or 0.4. To find a number where the value of the digit 4 is 1/10 of this value, we need to find a number that has a digit 4 in the tenths place and a digit in the ones place that is 10 times greater than 7.

Let's consider the number 8.4. In this number, the digit 4 is in the tenths place and the digit 8 is in the ones place. The value of the digit 4 in this number is 4 tenths or 0.4, which is 1/10 the value of the digit 4 in 7.4.

To check, we can calculate the value of the digit 4 in 8.4 as follows:

4/10 + 8 = 8.4

Therefore, the answer is 8.4.

To learn more about number click on,

https://brainly.com/question/13515081

#SPJ1

The value of the integral is -3ln(8)/8 + 21/8.

The summing of discrete data is indicated by the integration. To determine the functions that will characterise the area, displacement, and volume that result from a combination of small data that cannot be measured separately, integrals are calculated.

We can evaluate the integral using integration by parts:

Let u = ln(x) and dv = 3/x² dx. Then, du = 1/x dx and v = -3/x.

Using the formula for integration by parts, we have:

∫3ln(x)/x² dx = u*v - ∫v*du

= ln(x)*(-3/x) - ∫(-3/x)*1/x dx

= -3ln(x)/x + 3∫1/x² dx

= -3ln(x)/x - 3/x + C

where C is the constant of integration.

Now, we can evaluate the definite integral from 1 to 8:

∫1⁸ 3ln(x)/x² dx

= [-3ln(x)/x - 3/x]_1⁸

= [-3ln(8)/8 - 3/8] - [-3ln(1)/1 - 3/1]

= -3ln(8)/8 - 3/8 + 3

= -3ln(8)/8 + 21/8

Therefore, the value of the integral is -3ln(8)/8 + 21/8.

Learn more about integration on:

https://brainly.com/question/27746495

#SPJ4

If gender and handedness were independent, it would mean that the proportion of left-handed individuals would be the same for both men and women, and that knowing someone's gender would not provide any information about their handedness.

Gender and handedness are associated because women are more likely to be left-handed than men. D

The fact that women are about six times as likely to be left-handed as men suggests that there is a relationship between gender and handedness, and that knowing someone's gender can provide some predictive power for their handedness.

To conclude that gender and handedness are associated.

The proportion of left-handed people would be the same for both men and women if gender and handedness were independent, and knowing someone's gender would not reveal anything about their handedness.

Given that women are more likely to be left-handed than males, gender and handedness go hand in hand.

Given that women are almost six times more likely to be left-handed than males, there may be a correlation between gender and handedness, and one's gender may be able to predict someone's handedness.

to draw the conclusion that handedness and gender are related.

For similar questions on Gender and Handedness

https://brainly.com/question/21933156

#SPJ11

If a force of 18 lb is required to hold a spring stretched 2 inches, the work done in stretching the spring from its natural length to 4 inches beyond is 72 lb*in.

To find the work done in stretching the spring from its natural length to 4 inches beyond, we need to first find the spring constant k.

Using Hooke's law, we know that F = kx, where F is the force applied, x is the displacement from the natural length, and k is the spring constant.

So, when the spring is stretched 2 inches beyond its natural length, we have:

18 lb = k * 2 in

Solving for k:

k = 9 lb/in

Now, to find the work done in stretching the spring from its natural length to 4 inches beyond, we use the equation for work:

W = (1/2)kx²

Where x is the displacement from the natural length, which in this case is 4 - 0 = 4 inches.

W = (1/2) * 9 lb/in * (4 in)²

W = 72 lb*in

So, the work done in stretching the spring from its natural length to 4 inches beyond is 72 lb*in.

More on work done: https://brainly.com/question/30709811

#SPJ11

The area of window is 14.56 sq ft. The contractor should pay $101.92 to replace the window.

a) To find the area of the window, we need to use the formula for the area of a trapezoid, which is:

Area = (1/2) * (sum of parallel sides) * (height)

In this case, the sum of the parallel sides is 4 + 5 = 9 feet, and we know that one of the other sides is 3 feet. To find the height, we need to use the Pythagorean theorem:

[tex](Height)^{2}[/tex] = [tex](5-4.5)^{2}[/tex] +[tex]3^{2}[/tex]

[tex](Height)^{2}[/tex] = 0.25 + 9

[tex](Height)^{2}[/tex] = 9.25

Height ≈ 3.04 feet

So the area of the trapezoidal window is:

Area = (1/2) * (4 + 5) * 3.04

Area ≈ 14.56 square feet

b) To find the cost of replacing the window, we need to multiply the area of the window by the cost per square foot of the glass. In this case, the cost is $7 per square foot. So the cost of replacing the window is:

Cost = Area * Cost per square foot

Cost = 14.56 * 7

Cost ≈ $101.92

Therefore, the contractor should expect to pay about $101.92 to replace the window with glass that costs $7 per square foot.

Correct Question :

A contractor is replacing a trapezoidal window on the front of a house with measurements as length of parallel side be 4ft and 5 ft and the length of one of the two other side is 3 ft.

a) find the area of the window. ft

b) if the glass for the window costs $7 per square foot, about how much should the contractor expect to pay to replace the window?

To learn more about area here:

https://brainly.com/question/21025771

#SPJ4

The trend in the boiling points of the molecules shown is primarily determined by their intermolecular forces. As the intermolecular forces between molecules increase, so does the boiling point.
Based on the information given, we need to identify statements that explain the trend in boiling points of molecules with similar or identical molecular weight. When considering boiling point trends, key factors to take into account are molecular size, polarity, and intermolecular forces.

In conclusion, Molecules with stronger intermolecular forces, such as hydrogen bonding or dipole-dipole interactions, typically have higher boiling points. Additionally, molecules with larger surface areas or more polar bonds may exhibit higher boiling points due to increased interactions between the molecules.

Learn more about intermolecular forces here: brainly.com/question/9007693

#SPJ11

The original price of the luxury car was $73,000.

The equation is in the form of y = mx + b.

The y represents the value of the car

The x represents the number of years since its purchase

The m represents the depreciation rate per year

The b represents the original value of the car.

From this, we see that the depreciation rate per year is -2,500. To find the original value of the car, we set x = 0 and solve for y:

y = -2,500(0) + 73,000

y = 73,000.

Read more about depreciation

brainly.com/question/1203926

#SPJ1

The degree of the polynomial P(x) is 2.

Let the degree of the polynomials P(x) and Q(x) be 'm' and 'n' respectively.

deg {P(x)} = m

deg {Q(x)} = n

So deg {P(x²)} = 2m

and deg {Q³(x)} = 3n

Given that the degree of polynomial {P(x²).Q³(x)} is 12.

So, 2m*3n = 12

6mn = 12

mn = 12/6

mn = 2

n = 2/m ..................... (i)

Again, deg {P³(x)} = 3m

deg (Q(x)) = n

Now given that, deg[P³(x)/Q(x)] = 7

So, 3m/n = 7

3m = 7n

3m = 7*(2/m) [Using the equation (i)]

3m² = 14

m² = 14/3

m = 2 (approximating to nearest whole number)

Hence, the degree of the polynomial p(x) is 2.

To know more about polynomial here

https://brainly.com/question/2833285

#SPJ1

Answer:

9000

Step-by-step explanation:

There are a total of 9000 integers between 1000 and 9999 but every second number is even

To compare the mean math anxiety levels for participants in treatment condition A to the mean math anxiety levels for participants in treatment condition B, a two-sample t-test would be appropriate. This test is used to compare the means of two independent groups and assumes normally distributed populations with equal variances.

To compare the mean math anxiety levels for participants in treatment condition A to the mean math anxiety levels for participants in treatment condition B, a two-sample t-test would be an appropriate statistical test.

This test is used to determine if there is a significant difference between the means of two independent groups. Since the participants were randomly assigned to each treatment condition, the groups can be considered independent.

The two-sample t-test compares the means of the two groups while taking into account the variance of each group.

It assumes that the populations being sampled from are normally distributed and have equal variances. If these assumptions are not met, other statistical tests such as non-parametric tests may be more appropriate.

To know more about statistical test:

https://brainly.com/question/28957899

#SPJ4

the probability of choosing exactly 5 red marbles when 12 marbles are chosen at random is approximately 0.028.

This is a hypergeometric probability problem .

The total number of ways to choose 12 marbles from 27 is:

${{27}\choose{12}} = \frac{27!}{12!15!} = 10,!626,!766$

The number of ways to choose 5 red marbles and 7 blue marbles is:

$ {{15}\choose{5}}\cdot{{12}\choose{7}} = \frac{15!}{5!10!}\cdot\frac{12!}{7!5!} = 300,!450$

So the probability of choosing exactly 5 red marbles is:

$P(\text{5 red}) = \frac{300,!450}{10,!626,!766} \approx 0.028$

what is probability?

Probability is the measure of the likelihood or chance of an event occurring. It is a quantitative measure that ranges from 0 to 1, where 0 indicates an impossible event and 1 indicates a certain event.

To learn more about probability visit:

brainly.com/question/30034780

#SPJ11

Answer: We can simplify the left side of the equation as follows:

7×10^0 - 3×10^-1 = (7/1)×10^0 - (3/10)×10^0 = (7-0.3)×10^0 = 6.7×10^0

Substituting this into the given equation, we get:

6.7×10^0 = k×10^0

Dividing both sides by 10^0, we get:

k = 6.7

Therefore, the value of k that satisfies the given equation is 6.7.