Author Question: A cost accountant wishes to establish the average amount, , spent by executives per day on travel ... (Read 64 times)

kodithompson · **on:** Jun 24, 2018

A cost accountant wishes to establish the average amount, , spent by executives per day on travel and lodging. Then a comparison, between the average and the amount turned in to be reimbursed, will be made and unreasonably high or low expense amounts audited. A random sample of 50 executive expense receipts is taken. The average in the sample was 208 . From a similar survey the standard deviation of the amounts is approximately = 29 . The accountant prepares a 90-percent confidence level for . What is the confidence interval? ___________________ _ to ___________________ _
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Question 2

Determine the limits of the 75 confidence interval for , given that n = 90; x = 50; and = 12. ___________________ _ to ___________________ _
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