I need the answer asap pasagot po ng matino please

Consider a population of four values (3, 4, 8, 9)

a. Find the population mean.

b. Find the population variance.

c. Find the population standard deviation

d. Find all possible samples of 2 which can be drawn with replacement from this population.

e. Find the mean of the sampling distribution of means.

f. Find the variance and standard deviation of the sampling distribution of means.​