Question 830802
Q:
A final exam in Statistics has a mean of 73 with a standard deviation of 7.73.
Assume a random sample of 24 students is selected and the mean test score of the sample is computed.
What percentage of sample means are less than 70?
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A:
Type =normsdist((70-73)/(7.73/sqrt(24))) in Excel, then press enter to get the answer. 
The answer is 0.0286 or 2.86%.