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Mathematics 8 Online
OpenStudy (anonymous):

Assume that the population of heights of male college students is approximately normally distributed with mean m of 69.09 inches and standard deviation s of 4.71 inches. A random sample of 92 heights is obtained. A. find p (x > 68.50) B. Find p (xbar > 68.50) C. why is it formulas required to solve them different?

OpenStudy (anonymous):

i believe i found the mean and standard error of the xbar, P(( -69.09)/ 0.49>(68.5-69.09)/ 0.49)= P(Z>-1.20408)= 0.886.

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