Consider a binomial experiment with n=15 and .p=0.4 a. Compute f (0)  (to 4 decimals).   b. Compute f (13) (to 4 decimals).   c. Compute p (x less than equal to 4 )  (to 4 decimals).   d. Compute   p (x greater than equal to 2 )(to 4 decimals).     e. Compute E(x)  (to 1 decimal).   f. Compute  var (x) and .sd   (to 2 decimals)   (to 2 decimals)