Estimation And Confidence Intervals

Dr Susan Benner is an industrial psychologist.She iscurrently studying stress amoung executives of Internetcompanies.She has developed aquestionnaire that shebelieves measures stress.A score above 80 indicates stressat a dangerious level.A random sample of 15 executivesrevealed thefollowing stress level scores.94788390789997 909790939410075 84A.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?


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