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March 4, 2015

March 4, 2015

Posted by **Laurie** on Saturday, March 30, 2013 at 7:49pm.

- statistics -
**MathGuru**, Monday, April 1, 2013 at 7:16pmZ-statistic = (sample mean - population mean)/(standard deviation/square root of sample size)

sample mean = 105

population mean = 100

standard deviation = 15

sample size = 75

I'll let you take it from here to calculate.

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