The monthly sales of a mobile phone shop have been distributed with a standard deviation of $900.

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The monthly sales of a mobile phone shop have been distributed with a standard deviation of $900. A statistical study of sales in the last nine months has found a confidence interval for the mean of monthly sales with extremes of $5663 and $6839.

a. What were the average sales over the nine month period?

b. What is the confidence level for this interval?

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Business Analytics

ISBN: 9781292095448

2nd Global Edition

Authors: James R. Evans

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Question Posted: Jul 04, 2024 11:03 AM

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The monthly sales of a mobile phone shop have been distributed with a standard deviation of $900.

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Business Analytics

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