Question

a group of people were asked if they had run a red light in the last year. the number of people that responded yes is 254 and no is 103. find the probability that if a person is chosen at random, he/she has run a red light in the last year. round to two decimal places.

Explanation:

Step1: Calculate total number of people

The total number of people is the sum of those who responded yes and those who responded no. So, $254 + 103=357$.

Step2: Calculate the probability

The probability $P$ that a randomly - chosen person has run a red light is the number of people who responded yes divided by the total number of people. So, $P=\frac{254}{357}\approx0.71$.

Answer:

$0.71$