As a new Human Resources (HR) director, you found from a random sample of 25 people who left your firm that they had an average stay of 5 years at your firm with a sample standard deviation of3.3 years. Because your boss wishes to know with a 95% confidence that your employees are staying the industry average, you construct a 95% confidence interval for an average job length for your employees as
a. between 1.7 and 8.3 years
b. between 2.55 and 7.45 years
c. between -1.6 and 11.6 years
d. between 3.64 and 6.36 years
e. between 0 and 8.3 years
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