Answered: Region A Region B Mean salary $62,583…

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Region A Region B Mean salary $62,583 $60,117 Standard deviation $6,274 $9,319 Number of salaries 117 78

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section: Chapter Questions

Problem 8SGR

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Question

A state accounting agency is concerned that salaries of police officers in one region of the state were higher than salaries of police officers in another region of the state. The accounting agency took two independent random samples of salaries of police officers in the two regions and found the following data.

Is there evidence that the average salaries of police officers in region A are greater than the average salaries of police officers in region B?

Assume all conditions for inference have been met.

a. Yes, there is evidence at the significance level of α = 0.001
b. Yes, there is evidence at the significance level of α = 0.01 but not at α = 0.001.
c. Yes, there is evidence at the significance level of α = 0.05 but not at α = 0.01.
d. Yes, there is evidence at the significance level of α = 0.10 but not at α = 0.05.
e. No, there is no evidence at the significance level of α = 0.10.

Region A
Region B
Mean salary
$62,583
$60,117
Standard deviation
$6,274
$9,319
Number of salaries
117
78

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