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April 16, 2014

Homework Help: stats

Posted by dan on Monday, January 23, 2012 at 10:03pm.

A final exam in Math 160 has a mean of 73 with standard deviation 7.73. Assume that a random sample of 24 students is selected and the test score of the sample is computed. Assuming the scores are normally distributed, what percentage of sample means are less than 69?

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