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Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week....

Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week. A sample of 66 weekly reports showed a sample mean of 17.5 customer contacts per week. The sample standard deviation was 4.2.

Provide a 90% confidence interval for the population mean number of weekly customer contacts for the sales personnel. (Round your answers to two decimal places.)

  contacts/week to    contacts/week

Provide 95% confidence interval for the population mean number of weekly customer contacts for the sales personnel. (Round your answers to two decimal places.)

   contacts/week to    contacts/week

Math   Statistics-And-Probability   
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