Contract specifications require (among other things) that Meals-On-Tracks, Inc., deliver 14,400 combat meals with a mean weight of 8.5 ounces. You have been given a technical report with the results of a sample of 25 dry combat meals taken from today's shipment. The sample had a mean weight of 8.0 ounces and a standard deviation of .1 ounce.
The contractor contends that the difference between the specified weight and the sample weight is due to sampling error.
A. Is it likely that the contractor is right?
B. That is, would you accept the shipment?
Fill in the following table
use a 5 percent significance level for all statistical analysis.
Statistic X s n a
Detailed solution to the hypothesis test is provided.