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vesna_86 [32]
3 years ago
14

Over the past several years, the proportion of one-person households has been increasing. The Census Bureau would like to test t

he hypothesis that the proportion of one-person households exceeds 0.27. A random sample of 125 households found that 43 consisted of one person. To conduct the hypothesis test, what distribution would you use to calculate the critical value and the p-value?
a. the Student's t-distribution with 124 degrees of freedom
b. the Student's t-distribution with 125 degrees of freedom
c. the standard normal distribution
d. the Student's t-distribution with 42 degrees of freedom
Mathematics
1 answer:
White raven [17]3 years ago
6 0

Answer:

a. the Student's t-distribution with 124 degrees of freedom

Step-by-step explanation:

We have no information about the standard deviation of the population, just for the sample, which means that the student's t-distribution is used.

Degrees of freedom

Sample size subtracted by 1.

125 households were sampled.

125 - 1 = 124 degrees of freedom.

So the correct answer is:

a. the Student's t-distribution with 124 degrees of freedom

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Dan's dog walking job pays $15 per hour his job as a car wash attendant pays $400 each week Dan wants to know how many hours he
Sergio [31]

Answer:

520<400+15x

15x>120

15x+400>520

Explanation:

Pay of Dan's car wash attendant job =$400 per week

The amount he earns per hour walking dogs = $15

Let the number of hours spent walking dogs in a week = x

Therefore, total earning for walking dogs =$15x

Since he wants to earn more than $520, we have that:

15x+400>520\text{  (Option F)}

We can rewrite this as:

520

If we collect like terms, we have:

\begin{gathered} 520-400

So the inequalities are:

0. 520<400+15x

,

1. 15x>120

,

2. 15x+400>520

5 0
9 months ago
A can of tuna has a diameter of 4 Inches and a helght of 3 inches. What is the volume of the can of tuna? (Use 3.14 for
wariber [46]

Answer:

37.68 Inches cubed (A)

Step-by-step explanation:

The formula for a cylinder is:

πr^2(h)

First, let's find the radius, which is:

4/2 = 2

Now, we can plug in the values:

3.14(2)^2(3)

Do exponents first:

3.14(4)(3)

Multiply left to right:

12.56(3)

Again:

37.68 Inches

So, the answer is:

37.68 Inches cubed (Or A)

Hope this helps!

7 0
2 years ago
Helpp<br> 11 7/8 + 4 1/2
Eddi Din [679]

Answer:

16.375 or 16 3/8

Step-by-step explanation:

8 0
2 years ago
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Which store has the lowest price after discount?
DENIUS [597]

Answer: 99 cent store

Step-by-step explanation:

7 0
2 years ago
4. Find the value of x.
oksano4ka [1.4K]

Answer:

x = 50°

Step-by-step explanation:

The sum of the measures of the angles of a quadrilateral is 360°

360 - 40 - 80 - 110 = 130

130 is the measure of the quad that is adjacent to the angle of x° and is supplementary to that angle also.

Therefore, x = 180 - 130 = 50

7 0
3 years ago
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