Determine the mean and standard deviation of the variable X in each of the following binomial distributions. a. n = 4 and it = 0.60 b. n = 3 and It = 0.10 c. n = 4 and it = 0.30 d. n = 3 and x = 0.20 .. . a. When n = 4 and It = 0.60, determine the mean. H = (Type an integer or a decimal. Do not round.)