Answer:
Add y+x and maby that's u answer
Step-by-step explanation:
Residences of U.S. Citizens According to the U.S. Census, 67.5% of the U.S. population were born in their state of residence. In a random sample of 203 Americans, what is the probability that fewer than 126 were born in their state of residence? Round the final answer to at least four decimal places and intermediate -value calculations to two decimal places.
P ( X < 126)=?
Answer:
P(X < 126) = 0.0418
Step-by-step explanation:
To solve this question, we use the binomial approximation to the normal to solve this question.
Binomial probability distribution
Probability of exactly x sucesses on n repeated trials, with p probability.
Can be approximated to a normal distribution, using the expected value and the standard deviation.
The expected value of the binomial distribution is:
[tex]E(X) = np[/tex]
The standard deviation of the binomial distribution is:
[tex]\sqrt{V(X)} = \sqrt{np(1-p)}[/tex]
Normal probability distribution
Problems of normally distributed distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
When we are approximating a binomial distribution to a normal one, we have that [tex]\mu = E(X)[/tex], [tex]\sigma = \sqrt{V(X)}[/tex].
Sample of 203, 67.5% of the U.S. population were born in their state of residence.
This means that [tex]n = 203, p = 0.675[/tex]
So, for the approximation:
[tex]\mu = E(X) = np = 203*0.675 = 137.025[/tex]
[tex]\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{203*0.675*0.325} = 6.67[/tex]
What is the probability that fewer than 126 were born in their state of residence?
Using continuity correction, this is P(X < 126 - 0.5) = P(X < 125.5), which is the pvalue of Z when X = 125.5. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{125.5 - 137.025}{6.67}[/tex]
[tex]Z = -1.73[/tex]
[tex]Z = -1.73[/tex] has a pvalue of 0.0418
So
P(X < 126) = 0.0418
hi lol help me in math pls
Answer:
The answer is y+3/12
Step-by-step explanation:
Subtract fractions, find the LCD and then combine.
Hoped this helped!
Could I perhaps have brainly?
I WILL GIVE BRAINLIEST PLS I NEED HELP, The scale drawing of a field in the shape of a triangle is shown below.
What is the actual area, in square meters, of this field?
Answer:
20
Step-by-step explanation:
The ratio of boys to girls in Mr. Williamson's class is 3 to 4. There are 15 boys in the class. How many girls are in the class?
Group of answer choices
4
12
16
20
Answer:
20
Step-by-step explanation:
which equation can be used to represent 'three minus the difference of a number and one equals one-half of the difference of three times the same number and four
Answer:
3 - (x - 1) = 1/2(3x - 4)
Step-by-step explanation:
Use the graph to write the explicit rule of the arithmetic sequence.
A)
ƒ(n) = 3 + 1(n – 1)
B)
ƒ(n) = 7 + 3(n – 1)
C)
ƒ(n) = 7 + (–2)(n – 1)
D)
ƒ(n) = 2 + (–7)(n – 1)
Answer:
[tex]f_n=7+\left(-2\right)\left(n-1\right)[/tex]
Therefore, option C is true.
Step-by-step explanation:
From the graph, we get the sequence
7, 5, 3, 1, ...
Here,
a₁ = 7 is the first element.
An arithmetic sequence has a constant difference 'd' and is defined by
[tex]f_n=a_1+\left(n-1\right)d[/tex]
computing the differences of all the adjacent terms
[tex]5-7=-2,\:\quad \:3-5=-2,\:\quad \:1-3=-2[/tex]
The difference between all the adjacent terms is the same and equal to
[tex]d=-2[/tex]
substituting a₁ = 7 and d = -2 in the nth term of the sequence
[tex]f_n=a_1+\left(n-1\right)d[/tex]
[tex]f_n=7+\left(-2\right)\left(n-1\right)[/tex]
Therefore, option C is true.
Answer:
C
Step-by-step explanation:
In which field of Information Technology do IT professionals work directly with other employees to solve their general
technology related issues?
O Information Services and Support
Network System Administration
Programming and Software Development
O Interactive Media
Mark this and return
Save and Exit
NOX
Answer: Information Services and Support
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
just did it mark me brainlest if didn't spell it right ohh wellcan you help me with this
Gabby picked out a handful of jellybeans. She chose 8 red, 3 yellow, 5 black, and 2 orange. What is the ratio of yellow jellybeans to total jellybeans?
Answer:
The ratio of yellow jellybeans to total jellybeans is 1:6.
Step-by-step explanation:
The ratio of yellow jellybeans to total jellybeans is given by the number of yellow jellybeans divided by the number of total jellybeans.
In this question, we have that:
There are 3 yellow jellybeans.
In total, there are 8 + 3 + 5 + 2 = 18 total jellybeans.
So the ratio is:
3/18 = 1/6 = 1:6
The ratio of yellow jellybeans to total jellybeans is 1:6.
A weather balloon is 529 meters above the ground. Two weather stations, A and B, monitor the balloon’s progress. A weather balloon is 529 meters above the ground. Weather stations A and B are on the ground to form a triangle. A horizontal line is drawn at the top of the triangle to form angle v on the left and angle w on the right. The angle formed with A is x and the angle formed with B is y. A vertical line is drawn from the weather balloon to the ground to form a right angle and split the distance between A and B into 2 parts. The distance from A to the vertical line is 229 meters, and the distance between the vertical line and point B is 347 meters. Compare the measures of the different angles of elevation and depression that are labeled in the diagram. Which statements are true? Check all that apply.
Answer:
A, C, D
Step-by-step explanation:
Answer:
A C D
Step-by-step explanation:
Find -x + 10 less than 0
What is the Greatest Common Factor (GCF) of 12 and 32? *
Answer: wow here's answer its 4
Step-by-step explanation:
Answer:
4
Do you need an explanation?
Find an expression which represents the sum of (-6x + 9y) and (-10x – 6y) in
simplest terms.
Answer:
-16x+3y
Step-by-step explanation:
sum=add
(-6x + 9y)+(-10x – 6y)
Combine like terms
-6x+(-10x)
-16x
9y+(-6y)
3y
-16x+3y
2. Find the probability of a
batting average greater than
0.261.
Answer:
0.1044738
Step-by-step explanation:
Helppppppp I will give brainliest Which equation makes a straight line?
Oy= -5x
Oy=2x-1
Oy=3* + 4
y = 4x - 5x?
Answer:
a) The equation of the straight line passing through the origin and having slope m=-5
y = -5x
b) The equation of the straight line in slope-intercept form
y = 2 x -1
Step-by-step explanation:
Step(i):-
We know that the equation of the straight line passing through the point (x₁, y₁) and having slope 'm'
y - y₁ = m(x-x₁)
a)
Given that the equation of the straight line passing through the origin and having slope m=-5
y = -5x
Step(ii):-
b)
Given that the equation of the straight line in slope-intercept form
y = m x +c
y = 2 x -1
Which of these types of saving are you already doing
What is the 6th term in the following sequence : 6, 12, 24, 48, 96
Solve by using Substitution: 3x-y=13 2x +2y = -10
An equation is shown below.
4j=-22
Which number line best represents the solution to the equation?
Answer:
B second one
Step-by-step explanation:
5.5
Answer:last one
Step-by-step explanation:
4j=-22 divide
4. 4
J=-5.5
paul is 14yrs old. how old will he be in (a) 12yrs time (b) Byrs time I got a but I need B
Answer:
26? im not sure wut u mean
Step-by-step explanation:
Factor the expression.
x^2 - 6x + 8
Answer:
(x-4), (x-2)
i think this is what you're looking for
Answer:
its actually (x+2) , (x+4)
Step-by-step explanation:
Cliff has some berries in his basket. He picks 15 more berries. Then he gives
away 28 berries to his friends Cliff now has 12 berries. How many berries did
cliff in his basket to start?
Answer:
15 berries
Step-by-step explanation:
The number of berries that cliff has in his basket to start will be 65 berries.
What is Algebra?The analysis of mathematical representations is algebra, and the handling of those symbols is logic.
Cliff has some berries in his basket. He picks 15 more berries. Then he gives away 28 berries to his friends Cliff now has 12 berries.
The number of the berries that cliff has in his basket to start will be given as,
⇒ 15 + 28 + 12
⇒ 15 + 40
⇒ 65
The number of berries that cliff has in his basket to start will be 65 berries.
More about the Algebra link is given below.
https://brainly.com/question/953809
#SPJ5
What is 1/2 divided by 1/3
Answer:
[tex]\frac{3}{2}[/tex]
Step-by-step explanation:
[tex]\frac{1}{2}[/tex] ÷ [tex]\frac{1}{3}[/tex]
The reciprocal of [tex]\frac{1}{3}[/tex] is 3, so finding the reciprocal will replace the division sign with a multiplication sign.
= [tex]\frac{1}{2}[/tex] x 3
= [tex]\frac{3}{2}[/tex] or 1[tex]\frac{1}{2}[/tex] or 1.5
(CO 2) A random selection from a deck of cards selects one card. What is the probability of selecting a spade
Answer:
[tex]P(Spade) = 0.25[/tex]
Step-by-step explanation:
Given.
In a deck, there are:
[tex]Cards = 52[/tex]
[tex]Spade= 13[/tex]
Required
Determine the probability that a selected card is a spade
This is represented as: P(Spade) and it is calculated using:
[tex]P(Spade) = \frac{Spade}{Cards}[/tex]
Substitute 13 for Spade and 52 for Cards
[tex]P(Spade) = \frac{13}{52}[/tex]
[tex]P(Spade) = 0.25[/tex]
Hence, the required probability is 0.25
PLEASE HELP NEED BY 11:50 OF JAN 25 2021
Answer:
H
Step-by-step explanation:
Find the sum of 5x + 20 and the opposite of 20. Write an equivalent expression in standard form. Do not include any spaces in your answer.
Answer:
5x
Step-by-step explanation:
add -20 to 20 =0
then your have 5x=0
the equation 5x+20-20=5x
Fill in the circle with the correct inequality statement. - 1.5O - 1.3 AIV
Answer:
ohh hiii and I dob5 understand that -
Is it linear or exponential
Answer: exponential
Step-by-step explanation: the x in the equation is an exponent
Answer:
Exponential.
Step-by-step explanation:
The function shown is h(x) = 8(1/3)^x.
Essentially this is showing powers of 1/3 multiplied by 8.
This would not make a line, as it involves an exponent.
As a result, this function is exponential, because of the exponent involved.
Evaluate the following expression when x = 3 and y = 4:
Fraction with x squared plus y cubed in the numerator and 2 plus x in the denominator.
3.6
8.6
14.6
21.6
Answer:
14.6
Step-by-step explanation:
i took the test
Simplify the expression: 3(x + 3)
Answer:
3x + 9
Step-by-step explanation:
