Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week. A sample of 65 weekly reports showed a sample mean of 19.5 customer contacts per...

Sales personnel for Skillings Distributors submit weekly reports listing the customer
contacts made during the week. A sample of 65 weekly reports showed a sample mean of
19.5 customer contacts per week. The sample standard deviation was 5.2. Provide 90% and
95% confidence intervals for the population mean number of weekly customer contacts for
the sales personnel.