In a particularly long traffic light on your morning commute is green 20% of the time that you approach it. Assume that each morning represents an independent trial. What is the probability that the first morning that the light is not green is the fifth morning that you approach it?

A group of people were asked if they had run a red light in the last year. 150 responded "yes", and 231 responded "no".Find the probability that if a person is chosen at random, they have run a red light in the last year.

The​ (hypothetical) table below shows the relationship between the number of hours students work at​ part-time jobs each week and the number of years it takes then to graduate with an undergraduate degree. If a student works more than 5 hours per​ week, what is the probability that the student graduates in over 6​ years?

Suppose a free throw shooter makes 67 percent of their first attempts.  On the second attempt they make 81 percent if they had made their first attempt, but 59 percent if they had miss.  What is the probability that they make one of two attempts (one or the other attempt, but not both)?