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August 2, 2015

Homework Help: statistics

Posted by Desire on Wednesday, December 2, 2009 at 8:44am.

Assume we draw a simple random sample from a population having a mean of 100 and a standard deviation of 16. What is the probability that a sample mean will be within plus-or-minus two of the population mean for each of the following sample sizes?
(a.) n = 50 ____________
(b.) n = 100
(c.) n = 200 ____________
(d.) n = 400 ____________

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