Homework Help: statistics

Posted by Anonymous on Wednesday, June 13, 2012 at 11:25am.

A final exam in sociology has a mean of 72 and a standard deviation of 9.2. If 35 students are randomly selected, find the probability that the mean of their test scores will be greater than 76. Round to tenth of a percent

statistics - PsyDAG, Wednesday, June 13, 2012 at 12:24pm
Z = (score-mean)/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.
statistics - Anonymous, Thursday, June 14, 2012 at 2:41am
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