Michmoo Computer Company sells computers and computer parts by mail. The company assures its customers that...
Michmoo Computer Company sells computers and computer parts by mail. The company assures its customers that products are mailed as soon as possible after an order is placed. A random sample of 58 recent orders showed that the mean time taken to mail products for these orders was 69 hours. Assume that the population standard deviation is 17 hours. Estimate with 99% confidence the mean time taken to mail products for all orders received at the office of this company. (Use Excel and round final values to 2 decimal places.)
Complete the following sentence to provide an interpretation of the confidence interval in the context of the problem:
We are 99% confident that the (Click to select)samplepopulation (Click to select)standard deviationmeanproportion of the time taken to mail products for (Click to select)all58 orders received at the office of this company is between and hours.
Homework Answers
Confidence Interval :-
Lower Limit = 
Lower Limit = 63.2502
Upper Limit = 
Upper Limit = 74.7498
99% Confidence interval is ( 63.25 , 74.75 )
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