Probability Problems

Question

Question #6:

A group of people were asked if they had run a red light in the last year. 159 responded "yes" and 131 responded "no." Find the probability that if a person is chosen at random from this group, they have not run a red light in the last year.

Answer 1

There are 159 people who said yes + 131 who said no. Summed together this equals 290 people. Out of those 290, there are 131 who said "no" to running a red light.

The probability that a person had run a red light is approximately 131/290 = 0.451724

This is approximately 45.17%