1 does mean of the sampling means always equal to that of the population mean 2 as the size of the sample increase, the sampling distribution of the...

1 does mean of the sampling means always equal to that of the population mean

2 as the size of the sample increase, the sampling distribution of the sample means is approximately.

3 what is the central limit theorem . how large should the sample size be if the underlying distribution of the population values

 a normally distributed  and non normally distributed