### Binominal Distribution: Probability

In a certain binomial distribution, π = 0.20 and n = 30. In using the normal approximation, a. What are the mean and standard deviation of the corresponding normal distribution? b. If x = the number of "success" among the 30 observation, determine the following: P(x = 5), P(4 ≤ x ≤ 7), P(1 ≤ x ≤