Homework Help: Math

Posted by Kim on Sunday, November 6, 2011 at 2:02pm.

Find the probability that a randomly selected sample of 30 men has a mean greater than 68 inches. The mean height of men is 69 inches and standard deviation of 2.8 inches

Math - PsyDAG, Monday, November 7, 2011 at 12:19am
Z = (mean1 - mean2)/SEm

SEm = SD/√n

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to the Z score calculated.

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