calculate the std and mean of the sample, but please use a calculator and tables for the rest of your answer.

One of the major measures of the quality of service provided by any organization is the speed with which it responds to customer complaints. A large family-held department store selling furniture and flooring, including carpets, had undergone a major expansion in the past several years. In particular, the flooring department had expanded from 2 installation crews to an installation supervisor, a measurer, and 15 installation crews. Last year, there were 30 complaints concerning carpet installation. The following data represent the number of days between the receipt of a complaint and the resolution of the complaint:

 

54 5 35 137 31 27 152 2 123 81 74 27 11 19 126

110 110 29 61 35 94 31 26 5 12 4 165 32 29 28

 

Construct a 95% confidence interval estimate of the mean number of days between the receipt of a complaint and the resolution of the complaint.

You can use Excel to calculate the std and mean of the sample, but please use a calculator and tables for the rest of your answer. Please submit all of your calculations, Excel printouts, and the final answer. Please justify all steps of your solution.

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