Question 2 Dr. Susan Benner 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. 94 68 83 90 78 79 77 90 97 80 93 94 72 75 84 a. Find the mean stress level for this sample. b. What is the point estimate of the population mean? c. Construct a 95% confidence interval for the population mean. d. Is it reasonable to conclude that internet executives have a mean stress level in the dangerous level, according to Dr. Brenner’s test? Justify your answer.
Question 2 Dr. Susan Benner 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. 94 68 83 90 78 79 77 90 97 80 93 94 72 75 84 a. Find the mean stress level for this sample. b. What is the point estimate of the population mean? c. Construct a 95% confidence interval for the population mean. d. Is it reasonable to conclude that internet executives have a mean stress level in the dangerous level, according to Dr. Brenner’s test? Justify your answer.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question 2
Dr. Susan Benner 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.
94
68
83
90
78
79
77
90
97
80
93
94
72
75
84
a. Find the mean stress level for this sample.
b. What is the point estimate of the population mean?
c. Construct a 95% confidence interval for the population mean.
d. Is it reasonable to conclude that internet executives have a mean stress level in the
dangerous level, according to Dr. Brenner’s test? Justify your answer.
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