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A population has a mean of 200 and a standard deviation of 90. Suppose a sample of size 100 is selected andis used to estimate

A population has a mean of 200 and a standard deviation of 90. Suppose a sample of size 100 is selected andis used to estimate . Use z-table.

What is the probability that the sample mean will be within +/- 8 of the population mean (to 4 decimals)? (Round z value in intermediate calculations to 2 decimal places.)

What is the probability that the sample mean will be within +/- 18 of the population mean (to 4 decimals)? (Round z value in intermediate calculations to 2 decimal places.)

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