A consumer report company obtained records of the monthly cell phone bills of students at Bush Campus and takes a random sample of 10 cell phone bills of Bush campus residents from provider AG&G and another of 8 cell phones bills from provider CT&T . The summary data is given bellow. We want to compare the mean cost between CT&T and AG&G phones. Are they the same? It is assumed that the populations are normal, and the variances are approximately equal and α = 0.10. Which hypothesis test is appropriate? What kind of alternative should be used? Perform the test and discuss the conclusion. Sample Mean SD Sample Size AG&G $33 7 10 CT&T $40 11 8
A consumer report company obtained records of the monthly cell phone bills of students at Bush Campus and takes a random sample of 10 cell phone bills of Bush campus residents from provider AG&G and another of 8 cell phones bills from provider CT&T . The summary data is given bellow. We want to compare the mean cost between CT&T and AG&G phones. Are they the same? It is assumed that the populations are normal, and the variances are approximately equal and α = 0.10. Which hypothesis test is appropriate? What kind of alternative should be used? Perform the test and discuss the conclusion. Sample Mean SD Sample Size AG&G $33 7 10 CT&T $40 11 8
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 23PPS
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Question
A consumer report company obtained records of the monthly cell phone bills of students at Bush Campus and takes a random sample of 10 cell phone bills of Bush campus residents from provider AG&G and another of 8 cell phones bills from provider CT&T . The summary data is given bellow.
We want to compare the mean cost between CT&T and AG&G phones. Are they the same? It is assumed that the populations are normal, and the variances are approximately equal and α = 0.10. Which hypothesis test is appropriate? What kind of alternative should be used? Perform the test and discuss the conclusion.
|
Sample |
Mean |
SD |
|
|
AG&G |
$33 |
7 |
10 |
|
CT&T |
$40 |
11 |
8 |
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