A population has a mean of 150 and a standard deviation of
"A population has a mean of 150 and a standard deviation of 21. If a random sample of 49 is taken, what is the probability that the sample mean is between 152.5 and 157.5 using z scores?"
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a population has a mean of 150 and a standard deviation of 21 if a random sample of 49 is taken what is the probability
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