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A population has a mean of 300 and a standard deviation of 50 . Suppose a simple random
sample of size 125 is selected and x is used to estimate . Use z-table. a. What is the probability
that the sample mean will be within pm 4 of the population mean (to 4 decimals)? b. What is the
probability that the sample mean will be within pm 10 of the population mean (to 4 decimals)?

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A population has a mean of 300 and a standard deviation of 50 . Suppo.pdf

  • 1. A population has a mean of 300 and a standard deviation of 50 . Suppose a simple random sample of size 125 is selected and x is used to estimate . Use z-table. a. What is the probability that the sample mean will be within pm 4 of the population mean (to 4 decimals)? b. What is the probability that the sample mean will be within pm 10 of the population mean (to 4 decimals)?