stats

Given a normal population whise mean is 50 and whise standard deviation is 5, find the probability that a random sample of 25 has a mean greater than 52.

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1. Z = (52-50)/SEm

SEm = SD/sqrt n

Look up Z in table in back of your text labeled area under normal distribution.

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posted by PsyDAG
2. 0.9772

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posted by retha

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