SOLUTION: The mean score on the exit examination for an urban high school is 63 with a standard deviation of 9. What is the standard deviation of the distribution of sample means with a samp

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Question 1033183: The mean score on the exit examination for an urban high school is 63 with a standard deviation of 9. What is the standard deviation of the distribution of sample means with a sample size of 9?
A. 2
B. 3
C. 4
D. 4.1

Answer by robertb(5830) About Me  (Show Source):
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B. 3
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The standard deviation of the distribution of sample means with a sample size of 9 is given by sigma%2Fsqrt%28n%29+=+9%2Fsqrt%289%29+=+9%2F3+=+3.