Find the indicated probability.
-A study of consumer smoking habits includes 159 people in the $18 - 22$ age bracket ( 48 of whom smoke), 132 people in the 23-30 age bracket (35 of whom smoke), and 94 people in the 31-40 age bracket ( 26 of whom smoke). If one person is randomly selected from this sample, find the probability of getting someone who is age $18 - 22$ or does not smoke.
A) 1.13
B) 0.698
C) 0.288
D) 0.842

Question

Quizplus · Accepted Answer

The probability of selecting someone who is age 18-22 or does not smoke is calculated by adding the probability of selecting someone age 18-22 and the probability of selecting someone who does not smoke, then subtracting the probability of selecting someone who is both age 18-22 and smokes. This results in (159/385) + (276/385) - (48/385) = 0.842.

Find the Indicated Probability 18−2218 - 2218−22 Age Bracket ( 48 of Whom Smoke), 132 People in Includes

Find the Indicated Probability $18 - 22$ Age Bracket ( 48 of Whom Smoke), 132 People in Includes