If your sample mean is 25, your population average is 20, and your standard error of the mean is 8, what is your observed z value?
A)1.5
B)3
C)−5
D)0.63

Name: If your sample mean is 25, your population average is 20, and your standard error of the mean is 8, what is your observed z value? A)1.5 B)3 C)−5 D)0.63
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Question

Quizplus · Accepted Answer

The observed z value is calculated as (sample mean - population average) / standard error of the mean. In this case, the observed z value is (25 - 20) / 8 = 0.63.

If Your Sample Mean Is 25, Your Population Average Is