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The military has two different programs for training aircraft personnel. A government regulatory agency has been...

The military has two different programs for training aircraft personnel. A government regulatory agency has been commissioned to evaluate any differences that may exist between the two programs. The agency administers standardized tests to randomly selected groups of students from the two programs. The results of the tests for the students in each of the programs are as follows

n x-bar s
Program A 50 85 10
Program B 55 87 9

Calculate a 90% confidence interval for the difference (Program A - Program B) between the average scores of the two programs. Round to two decimal places.

Math   Statistics-And-Probability   
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