The best choice based on the standards deviation will be to hire an employee from company A.
How to illustrate the information?
From the information given, the z value to company A will be:
= (6.5 - 5.5)/2.1
= 0.7142
The z value to company B will be:
= (7.4 - 5.5)/6.8
= 0.2794
Therefore, the best choice based on the standards deviation will be to hire an employee from company A since they've higher performance rating.
Learn more about standard deviation on:
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