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customer contacts for the sales personnel. 90% confidence interval, to 2 decimals: ( ,  ) 95% confidence interval, to 2 decimals:

customer contacts for the sales personnel. 90% confidence interval, to 2 decimals: ( ,  ) 95% confidence interval, to 2 decimals:

MATLAB: An Introduction with Applications
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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Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week. A sample of 85 weekly reports showed a sample mean of  17.5 customer contacts per week. The sample standard deviation was 5.4 . Provide  90 % and  95 % confidence intervals for the population mean number of weekly customer contacts for the sales personnel.

90% confidence interval, to 2 decimals:

( ,  )

95% confidence interval, to 2 decimals:

( , )

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