Find population standard deviation if sample mean is less

Reference no: EM13143728

Suppose a random sample of size 64 is drawn from a population with a mean of 277. If 90% of the time the sample mean is less than 280, what is the population standard deviation?

Reference no: EM13143728

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Find population standard deviation if sample mean is less : Suppose a random sample of size 64 is drawn from a population with a mean of 277. If 90% of the time the sample mean is less than 280, what is the population standard deviation?

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