The average U.S. household has $235,600 in life insurance. A local insurance agent would like to see how households in his city compare to the national average, and selects a simple random sample of 30 households from the city. For households in the sample, the average amount of life insurance is }x 5 $245,800, with s 5 $25,500. a. Using a nondirectional hypothesis test and a level of significance of your choice, what conclusion would be reached?b. For the significance level used in part (a), construct the appropriate confidence interval and verify the conclusion reached in part (a)
The average U.S. household has $235,600 in life insurance. A local insurance agent would like to see how households in his city compare to the national average, and selects a simple random sample of 30 households from the city. For households in the sample, the average amount of life insurance is }x 5 $245,800, with s 5 $25,500. a. Using a nondirectional hypothesis test and a level of significance of your choice, what conclusion would be reached?b. For the significance level used in part (a), construct the appropriate confidence interval and verify the conclusion reached in part (a)
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 8PPS
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Question
The average U.S. household has $235,600 in life
insurance. A local insurance agent would like to see how
households in his city compare to the national average,
and selects a simple random sample of 30 households
from the city. For households in the sample, the average
amount of life insurance is }x 5 $245,800, with
s 5 $25,500.
a. Using a nondirectional hypothesis test and a level of
significance of your choice, what conclusion would
be reached?
b. For the significance level used in part (a), construct
the appropriate confidence interval and verify the
conclusion reached in part (a)
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