Question

A group of people were asked if they had run a red light in the last year. 322 responded "yes", and 168 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

0.657

Explanations:

Probability is the likelihood or chance that an event will occur. Mathematically;

`\text{Probability}=\frac{expected\text{ outcome}}{total\text{ outcome}}`

If 322 of the people responded "yes", and 168 responded "no", the total outcome will be:

Total outcome = 322 + 168

Total outcome = 490 people

Pr(those that run red light) = Student with yes/Total students

Pr(those that run red light) = 322/490

Pr(those that run red light) = 0.657

Hence the probability that if a person is chosen at random, they have run a red light in the last year is 0.657