Question

A group of people were asked if they had run a red light in the last year. 207 responded "yes", and 457 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 rounded to 2 decimal places

Answer 1

To find:

The probability of a person running a red light.

Solution:

The number of persons who ran a red light is 207 and who did not run a red light is 457.

The total number of persons in the survey are 207 + 457 = 664.

So, the probabilty of getting a person who ran a red light is:

$\begin{gathered} P(R)=\frac{207}{664} \\ \approx0.31 \end{gathered}$

Thus, the answer is 0.31.