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

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Basic Math

Sales personnel forSkillings Distributors submit weekly reports listing the customercontacts made during the week. A sample of 65 weekly reports showeda sample mean of 18.5 customer contacts per week. The samplestandard deviation was 5.6. Provide 90% and 95% confidenceintervals for the population mean number of weekly customercontacts for the sales personnel.

90% Confidenceinterval, to 2 decimals:

( , )

95% Confidenceinterval, to 2 decimals:

( , )

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