What is the probability that an automobile will not run a red light at that intersection on a given day?

Question

A city finds empirically that an automobile going through the intersection of 5th and Main will run a red light sometime during a given day with probability 9.2%. What is the probability that an automobile will not run a red light at that intersection on a given day? Write your answer as a percentage.

Answer 1

If "p" is the probability that something shall happen, then 1 - p is the probability that it shall not happen.

 

1 - 9.2%

100% - 9.2%

90.8%