Answer:
Width = 18 inches
Perimeter = 99 inches
Area = 567 square inches
Step-by-step explanation:
The sides of a rectangle are in the ratio 4:7. Then
Width in
Length in.
If its longer side is 31.5 in, then
Length = 31.5 in
and
So,
Width
The perimeter is
The area is
Using the z-distribution, it is found that the p-value for this test is of 0.0375.
At the null hypothesis, it is <u>tested if the expenses are the same as the national average</u>, that is, of $5,423. Hence:
At the alternative hypothesis, it is <u>tested if it is higher</u>, hence:
We have the <u>standard deviation for the population</u>, thus, the z-distribution is used. The test statistic is given by:
The parameters are:
For this problem, the values of the <u>parameters</u> are:
The value of the <u>test statistic</u> is:
The p-value is the probability of finding a sample mean above $5,516, which is <u>1 subtracted by the p-value of z = 1.78</u>.
1 - 0.9625 = 0.0375
Hence, the p-value for this test is of 0.0375.
A similar problem is given at brainly.com/question/25549474