new drug is designed to reduce a person's blood pressure. Eight randomly selected hypertensive patients receive the new drug. Suppose the probability that a hypertensive patient's blood pressure drops if he r she receives the new drug is 0.5. Assume the number of hypertensive patients out of the eight whose blood pressure drops follows a binomial model. X P(X= x) 0.0039 1 0.0313 2 0.1094 3 0.2187 0.2734 5 0.2187 6 0.1094 0.0313 8 0.0039 What are the mean and the standard deviation of this distribution? O a. The mean is 3 and the standard deviation is 4. O b. The mean is 4 and the standard deviation is 2. O. The mean is 4 and the standard deviation is 1.41. O d. The mean is 2 and the standard deviation is 4. Question 34 of 70