The following data set represents the time (in minutes) for a random sample of phone calls made by e
Question: The following data set represents the time (in minutes) for a random sample of phone calls made by employees at a company.
7.5 2.0 12.1 8.8 9.4 7.3 1.9 2.8 7.0 7.3
a. (4) Find the sample mean.
b. (4) Find the sample standard deviation.
c. (8) Use the t-distribution to construct a 90% confidence interval for the
population mean and interpret the results. Assume the population of the data set is normally distributed.
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Solution: The solution consists of 1 page
Solution Format: Word Document
Solution Format: Word Document
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