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A researcher wants to see if police officers’ enthusiasm for their jobs changes after having endured a horrific event (such as killing someone or being shot).  She tests a group of officers who have endured such an event and another group that has not on a measure of job satisfaction. What test should she run?  Is it one-tailed or two-tailed test?

A researcher wants to see if police officers’ enthusiasm for their jobs changes after having endured a horrific event (such as killing someone or being shot).  She tests a group of officers who have endured such an event and another group that has not on a measure of job satisfaction. What test should she run?  Is it one-tailed or two-tailed test?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
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A researcher wants to see if police officers’ enthusiasm for their jobs changes after having endured a horrific event (such as killing someone or being shot).  She tests a group of officers who have endured such an event and another group that has not on a measure of job satisfaction.

What test should she run? 

Is it one-tailed or two-tailed test?

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