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August 28, 2015

Homework Help: statistics

Posted by Monique on Monday, October 31, 2011 at 5:33pm.

Suppose a random sample of 25 students is selected from a community college where the scores in the final exam (out of 125 points) are normally distributed, with mean equal to 112 and standard deviation equal to 12. Find the probability that the sample mean deviates from the population mean = 112 by no more than 4.
a.0.9050
b.0.9554
c.0.8767
d.0.9914

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