Dr. Kendi Sadek is an industrial psychologist. She is currently studying stress among executives of Internet companies. She has developed a questionnaire that she believes measures stress. A score above 80 indicates stress at a dangerous level. A random sample of 15 executives revealed the following stress level scores.

a. Find the point estimate of the population mean.b. Construct a 95% confidence level for the population mean.c. According to Dr. Sadek’s test, is it reasonable to conclude that the mean stress level of Internet executives is 80?

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