Asked by Murry

A normal population has a mean of 62 and a standard deviation of 5. You select a sample of 40.

Compute the probability that the sample mean is Between 61 and 63?

Answers

Answered by PsyDAG
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/probability.
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