Question: The same achievement test is given to soldiers selected at random from two units. The scores they attained are summarized as follows: Construct a 90%

The same achievement test is given to soldiers selected at random from two units. The scores they attained are summarized as follows:
The same achievement test is given to soldiers selected at

Construct a 90% confidence interval for the difference in the mean level of the two units.

Unit I:n, 70,x 73.2s 6.1 Unit 2: n 60,T70.5,s 5.5

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