At a call center in India, for a population of 7 workers, the following data recorded represent the number of complaint days during the summer time in the year 2020: 7 9 12 15 21 30 36 a) (2 points) if you sample without replacement, construct the sampling distribution of the mean for all possible samples of size n=2. Compute and compare the mean of all possible sample means and the population mean. Are they equal? What is this property called? b) (2 points) repeat a) for all possible samples of size n=3 c) (1 point) compare the shape of the sampling distribution of the mean in a) and b). d) (2 points) if you sample with replacement, repeat a), e.g.: construct the sampling distribution of the mean for all possible samples of size n=2. Compute and compare the mean of all possible sample means and the population mean. For this exercise3, present answers with 2 decimals