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The human resources director is studying the age of employees at two different plants (A and B). The director wants to test to see if

The human resources director is studying the age of employees at two different plants (A and B). The director wants to test to see if there is a difference in the average ages of the employees at the two plants. If he obtained a z-value of 1.88, what decision should be made? Assume =0.05.

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