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Dr Susan Benner is an industrial psychologist. She iscurrently studying stress a

ID: 2914896 • Letter: D

Question

Dr Susan Benner is an industrial psychologist. She iscurrently studying stress amoung executives of Internetcompanies. She has developed a questionnaire that shebelieves measures stress. A score above 80 indicates stressat a dangerious level. A random sample of 15 executivesrevealed the following stress level scores. 94 78 83 90 78 99 97 90 97 90 93 94 100 75 84 A. Find the mean stress level for this sample. What is the point estimate of the population mean? B. Construct a 95 percent confidence level for thepopulation mean. C. Is it reasonable to conclude that Internet executiveshave a mean stress level in the dangerous level, according to Dr.Benner's test? Dr Susan Benner is an industrial psychologist. She iscurrently studying stress amoung executives of Internetcompanies. She has developed a questionnaire that shebelieves measures stress. A score above 80 indicates stressat a dangerious level. A random sample of 15 executivesrevealed the following stress level scores. 94 78 83 90 78 99 97 90 97 90 93 94 100 75 84 A. Find the mean stress level for this sample. What is the point estimate of the population mean? B. Construct a 95 percent confidence level for thepopulation mean. C. Is it reasonable to conclude that Internet executiveshave a mean stress level in the dangerous level, according to Dr.Benner's test?

Explanation / Answer

A. the mean stress level and point sample is 89.47 B. (84.99,93.94) C. Yes it is reasonable to conclude that the mean stress level isin the dangerous level

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