What is the probability that the sample mean will be within

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A population has a mean of 400 and a standard deviation of 80. Suppose a sample of size 125 is selected and x ¯ is used to estimate μ a. What is the probability that the sample mean will be within +/- 5 of the population mean (to 4 decimals)? b. What is the probability that the sample mean will be within +/- 13 of the population mean (to 4 decimals)?

Reference no: EM131329820

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What is the probability that the sample mean will be within : A population has a mean of 400 and a standard deviation of 80. Suppose a sample of size 125 is selected and x ¯ is used to estimate μ. What is the probability that the sample mean will be within +/- 5 of the population mean (to 4 decimals)? What is t..

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