In the EAI sampling problem see Figure 7 5 we showed
In the EAI sampling problem (see Figure 7.5), we showed that for n = 30, there was .5034 probability of obtaining a sample mean within ± $500 of the population mean.
a. What is the probability that is within $500 of the population mean if a sample of size 60 is used?
b. Answer part (a) for a sample of size 120.
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