In: Math
In the EAI sampling problem, the population mean is $51,900 and the population standard deviation is $4,000. When the sample size is n = 30, there is a 0.5887 probability of obtaining a sample mean within +/- $600 of the population mean. Use z-table.
What is the probability that the sample mean is within $600 of
the population mean if a sample of size 60 is used (to 4
decimals)?
What is the probability that the sample mean is within $600 of the population mean if a sample of size 120 is used (to 4 decimals)?