What is the standard error of the mean when you have a sample size of 144 and a population standard deviation of 9?
A)7.5
B)0.75
C)12
D)8

Name: What is the standard error of the mean when you have a sample size of 144 and a population standard deviation of 9? A)7.5 B)0.75 C)12 D)8
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Quizplus · Accepted Answer

The standard error of the mean (SEM) is calculated using the formula SEM = σ / √n, where σ is the population standard deviation and n is the sample size. Plugging in the values given, SEM = 9 / √144 = 9 / 12 = 0.75.

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