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What is the probability that the sample mean

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A population has a mean of 128 and a standard deviation of 32. Suppose a sample of size 64 is selected and x is used to estimate ??. (Round your answers to four decimal places.)

(a) What is the probability that the sample mean will be within ±5 of the population mean?

(b) What is the probability that the sample mean will be within ±10 of the population mean?

Reference no: EM133266324

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