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1. Question : What is the relationship between the power of a statistical test and decision errors? Question 2. Question : The desired sample depends on all of these factors except? Question 3. Question : What question does the z test answer? Question 4. Question : The desired sample size depends only the size of the population to be tested. Question 5. Question : Each different t-distribution is defined by which of the following? Question 6. Question : What is the alternate hypothesis in a problem where sales group two is predicted to be â€œ. . . significantly less productive than sales group one?â€? Question 7. Question : Why do the critical values change with degrees of freedom for the t-tests? Question 8. Question : If a certifying agency raises the requirements for real estate agents, what sort of decision error is the agency protecting against? Question 9. Question : The desired sample size depends only the size of the population to be tested. Question 10. Question : The z- test requires an estimate of the population standard deviation.