If the sample mean is 25,the population average is 5,and the standard error of the mean is 10,what is the observed z value?
A)5
B)2.5
C)-2
D)2

Name: If the sample mean is 25,the population average is 5,and the standard error of the mean is 10,what is the observed z value? A)5 B)2.5 C)-2 D)2
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Question

Quizplus · Accepted Answer

The observed z value can be calculated using the formula: z = (sample mean - population mean) / standard error of the mean. Plugging in the values, we get z = (25 - 5) / 10 = 2. Therefore, the answer is choice D.

If the Sample Mean Is 25,the Population Average Is 5,and