In Order to Determine the Average Weight of Carry-On Luggage

question 72

Short Answer

In order to determine the average weight of carry-on luggage by passengers in airplanes, a sample of 25 pieces of carry-on luggage was collected and weighed. The average weight was 18 pounds. Assume that we know the standard deviation of the population to be 7.5 pounds.
a.Determine a 97% confidence interval estimate for the mean weight of the carry-on luggage.
b.Determine a 95% confidence interval estimate for the mean weight of the carry-on luggage.

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Definitions:

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