can't see to get the correct answer. Explanation would be appreciated thank you.

Determine the mean and standard deviation of the variable X in each of the following binomial distributions. a. n = 5 and It = 0.70 b. n = 4 and x = 0.30 c. n = 4 and x = 0.60 d. n = 5 and it = 0.50 a. When n = 5 and it = 0.70, determine the mean (Type an integer or a decimal. Do not round )