Question: 1. please show all work for this problem thank you A manager of the laundry takes a random sample of size 25 of times it

1. please show all work for this problem

thank you

A manager of the laundry takes a random sample of size 25 of times it takes employees to iron the shirt and obtains a mean of 105 seconds with standard deviation of 11. Find 95% confidence interval of the population mean .

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