Dr. Pat Jones is an industrial psychologist and is currently studying stress amount internet company executives. A questionnaire was developed to measure stress. A score above 80 indicates stress at a dangerous level. A random sample of 15 executives revealed the stress scores in the attached file. homework 3 - 2.xlsx ( Stress 94, 78, 83, 90, 78, 99, 97, 90, 97, 90, 93, 94, 100, 75, 84 ) Construct a 95% confidence interval for the population mean. What is the upper boundary? (answer should be in the following format xx.xxx)
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Dr. Pat Jones is an industrial psychologist and is currently studying stress amount internet company executives. A questionnaire was developed to measure stress. A score above 80 indicates stress at a dangerous level. A random sample of 15 executives revealed the stress scores in the attached file.
homework 3 - 2.xlsx ( Stress 94, 78, 83, 90, 78, 99, 97, 90, 97, 90, 93, 94, 100, 75, 84 )
Construct a 95% confidence interval for the population mean.
What is the upper boundary? (answer should be in the following format xx.xxx)
Given data,
94, 78, 83, 90, 78, 99, 97, 90, 97, 90, 93, 94, 100, 75, 84
Mean:
Standard deviation:
Here, sample size is 15. Population standard deviation is not known. It is appropriate to use t interval.
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