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January 26, 2015

January 26, 2015

Posted by **Joel** on Wednesday, March 23, 2011 at 9:48pm.

- Statistics -
**MathGuru**, Thursday, March 24, 2011 at 6:20pmUsing the z-test formula, solve for sample mean:

z = (sample mean - population mean)/(standard deviation divided by the square root of the sample size)

Find z in a z-table using p-value. Population mean is 48. Standard deviation is 3.5 and sample size is 75.

I'll let you take it from here.

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