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In the EAI sampling problem, the population mean is $51,900 and the population standard deviation is...

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Basic Math

In the EAI sampling problem, the population mean is $51,900 andthe population standard deviation is $4,000. When the sample sizeis n = 30, there is a 0.5887 probability of obtaining asample mean within +/- $600 of the population mean. Usez-table.

What is the probability that the sample mean is within $600 ofthe population mean if a sample of size 60 is used (to 4decimals)?

What is the probability that the sample mean is within $600 ofthe population mean if a sample of size 120 is used (to 4decimals)?

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