In order to determine the average weight of carry-on luggage by passengers in airplanes, a sample of 16 pieces of carry-on luggage was weighed. The average weight was 20 pounds. Assume that we know the standard deviation of the population to be 8 pounds. Also, assume the population is normally distributed.
a.Determine a 97% confidence interval estimate for the population mean weight of the carry-on luggage.b.Determine a 95% confidence interval estimate for the population mean weight of the carry-on luggage.
What will be an ideal response?
?
| a. | 15.66 to 24.34 pounds |
| b. | 16.08 to 23.92 pounds |
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