Question 15 Calculate o for a binomial distribution with n = 15 repeated trials and probability of success p= 0.9. (Round your answer, as needed.) (A) 1.16 (B) 1.35 (C) 1.5 (D) 13.5 Question 16 Consider the normal random variable X with mean u = 75 and stan- dard deviation o= 5. Find the probability that X assumes a value within one standard deviation of the mean. (A) 0.0456 (B) 0.3174 (C) 0.6826 (D) 0.9974