Posted by **Mikos** on Monday, November 18, 2013 at 8:04pm.

SAT scores are normally distributed with a mean of 500 and a standard deviation of 100. Using the formula for ÏƒM, what will ÏƒM be when

a. the sample size is 25

b. the sample size is 121, and

c. the sample size is 400?

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