A binomial experiment has the given number of trials n and the given success probability p. n-15, p=0.2 Part 1 of 3 (a) Determine the probability P(7). Round the answer to at least four decimal places. P(7)= 0.0138 Part 2 of 3 (b) Find the mean. Round the answer to two decimal places. The mean is 3.00 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 The standard deviation is