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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?

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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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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