A simple random sample of size n is obtained from a population with and . ​(a) Describe the sampling distribution of . ​(b) What is ​? ​(c) What is ​? ​(d) What is ​? ​(a) Choose the correct description of the shape of the sampling distribution of . A. The distribution is skewed left. B. The distribution is skewed right. C. The distribution is uniform. D. The distribution is approximately normal. Your answer is correct. E. The shape of the distribution is unknown. Find the mean and standard deviation of the sampling distribution of . 74 3 ​(b) 0.0735 ​(Round to four decimal places as​ needed.) ​(c) nothing ​(Round to four decimal places as​ needed.)