SOLUTION: 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.
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Assume a random sample of 24 students is selected and the mean test score of the sample is computed.
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Question 830802: 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? Answer by reviewermath(1029) (Show Source):
You can put this solution on YOUR website! 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%.
