Question

Given that the population of quarters has a mean weight of 5.67g and standard deviation of 1.34g, what do you know about the mean of the sample mean

Answer 1

The sample mean is an unbiased estimate of the population mean. This tells us that the mean of all sample means is equal to the population mean. Since we know that the population mean is 5.67, we also know that the mean of sample means is also 5.67.