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  3. ebook video sales personnel for skillings distributors submit weekly reports...

Question: ebook video sales personnel for skillings distributors submit weekly reports...

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eBook Video 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 18.5 customer contacts per week. The sample standard deviation was 5.1. 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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