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Previous question Banking fees have received much attention during the recent economic recession as banks look for ways to recover from the crisis. A sample

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Previous question Banking fees have received much attention during the recent economic recession as banks look for ways to recover from the crisis. A sample of 42 customers paid an average fee of $12.27 per month on their interest-bearing checking accounts. Assume the population standard deviation is $1.79. Complete parts a and b below. a. Construct a 99% confidence interval to estimate the average fee for the population. and an upper limit of $ The 99% confidence interval has a lower limit of $ (Round to the nearest cent as needed.) b. What is the margin of error for this interval? $(Round to the nearest cent as needed.)

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