A holiday park has a total of four holiday units, two with one bedroom, one with two bedrooms, and one with three bedrooms. a) Give the population distribution of the number of bedrooms in a histogram. b) What are the mean and standard deviation of the population distribution? c) A random sample without replacement of 2 holiday units is picked from the population. Give the sampling distribution of the sample mean in a histogram. d) Find the mean of the sampling distribution of the sample mean and compare it with the mean of the population distribution in b). e) A random sample with replacement of 2 holiday units is picked from the population. Give the sampling distribution of the sample standard deviation in a histogram