Question

A group of people were asked if they had run a red light in the last year. 313 responded "yes", and 286 responded "no".

Find the probability that if a person is chosen at random, they have run a red light in the last year.
Give your answer as a fraction or decimal accurate to at least 3 decimal places

Answer 1

`0.523`

Explanation:

Total number of respondents = 313 + 286 = 599

Number who responded yes = number running a red light

`\text P(\text {ran a red light)}}\\\\=\frac{\text{Number who ran a red light}}{\text{Total number of respondents}}\\\\= (313)/(599)\\\\= 0.52253`

Rounded to 3 decimal places the probability is
`0.523`