A binomial experiment has the given number of trials n and the given success probability p. n = 12, p=0.8 Part 1 of 3 (a) Determine the probability P (11 or more). Round the answer to at least four decimal places. P (11 or more)= .2749 Alternate Answer: P (11 or more )= 0.2749 Part 2 of 3 (b) Find the mean. Round the answer to two decimal places. The mean is 9.60 Part: 2 / 3 Part 3 of 3 (c) Find the variance and standard deviation. Round the variance to two decimal places and standard deviation to at least three decimal places. The variance is. X The standard deviation is