If the population standard deviation is 12 and the sample size is 36, what is the standard error of the sample mean?
Correct answer: B. 2
- A. 0.33
- B. 2
- C. 6
- D. 72
Explanation
The standard error of a sample mean is sigma divided by the square root of n. Therefore, 12 divided by the square root of 36 equals 12 divided by 6, which is 2.
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