Suppose 40% of the people in a population smoke 20 cigarettes per day, and the remaining 60% smoked none.Which of the following involves a correct interpretation of the expected value?
A)For all people in the population, the average is 8 cigarettes smoked per person per day.
B)For all people in the population, the average is 20 cigarettes smoked per person per day.
C)The chance is high that the next person you meet smokes eight cigarettes a day.
D)Almost everyone in the population smokes close to eight cigarettes per day.

Question

Quizplus · Accepted Answer

The expected value or mean number of cigarettes smoked per person per day can be calculated as (0.40 * 20) + (0.60 * 0) = 8. This means, on average, each person in the population smokes 8 cigarettes per day.

Suppose 40% of the People in a Population Smoke 20