The probability that the first success occurs on or before the fourth trial if each has a

Question:

The probability that the first success occurs on or before the fourth trial if each has a probability 0.2 of success.
Compute the above probabilities. In each case, sketch the probability and shade the associated area.
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...