Homework Help: statistics

Posted by anon on Sunday, November 6, 2011 at 7:28pm.

Help me! Population of heights of college students is approximately normally distributed with a mean of 64.37 inches and standard deviation of 6.26 inches A random sample of 74 heights is obtained. Find the mean and standard error of the x bar distribution 2. Find P(xbar > 65.25)

statistics - PsyDAG, Monday, November 7, 2011 at 12:08am
Z = (mean1 - mean2)/SEm

Z = (65.25-64.37)/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.

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