If your population average is 45, your sample mean is 50, and your standard error of the mean is 5, what is your observed z value?
A)0
B)−.1
C)1
D)−1

Name: If your population average is 45, your sample mean is 50, and your standard error of the mean is 5, what is your observed z value? A)0 B)−.1 C)1 D)−1
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Question

Quizplus · Accepted Answer

The formula to calculate the observed z value is:
z = (sample mean - population mean) / standard error
z = (50 - 45) / 5
z = 1

If Your Population Average Is 45, Your Sample Mean Is