a. Find E(p) and as. The mean of the sampling distribution of p is]. The standard deviation of the sampling distribution of p is (Round to four decimal places as needed.) b. Describe the shape of the sampling distribution of p. O A. The shape of the sampling distribution of p is approximately normal because the sample size is large. O B. The shape of the sampling distribution of p is approximately uniform because the sample size is small. O C. The shape of the sampling distribution of p is approximately uniform because the sample size is large. O D. The shape of the sampling distribution of p is approximately normal because the sample size is small C. Find P (p =0.9) The probability that p is less than 0.9 is (Round to four decimal places as needed.)A random sample of n = 228 measurements is drawn from a binomial population with probability 01 success [1.85. Complete parts a through 6 below