If a binomial distribution applies with a sample size of n = 20, find a. The probability

Question:

If a binomial applies with a sample size of n = 20, find
a. The probability of 5 successes if the probability of a success is 0.40
b. The probability of at least 7 successes if the probability of a success is 0.25
c. The expected value, n = 20, p = 0.20d.
d. The standard deviation, n = 20, p = 0.20
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...