Question
A researcher records the repair cost for27 randomly selected VCRs. A sample mean of$86.26 and standard deviation of$11.77 are subsequently computed. Determine the90% confidence interval
A researcher records the repair cost for27 randomly selected VCRs. A sample mean of$86.26 and standard deviation of$11.77 are subsequently computed. Determine the90% confidence interval for the mean repair cost for the VCRs. Assume the population is approximately normal.
Step 2 of 2: Construct the90% confidence interval. Round your answer to two decimal places.
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An Introduction to Analysis
Authors: William R. Wade
4th edition
132296381, 978-0132296380
