Question

The table below describes the smoking habits of a group of asthma sufferers. Use this table to answer questions 7-9. Nonsmoker Light Smoker Heavy Smoker Total Men 75 65 470 Women 315 87 485 Total 645 158 152 7) If one of the subjects is randomly selected, find the probability that he/she is a light smoker or a woman. 330 83 955 8) If 3 of the subjects are randomly selected, find the probability that they are all men. (5) 9) If one of the subjects is randomly selected, find the probability that she is a heavy smoker given that she is a woman.

Answer 1

& Pllight smoker or women) = P(light er) + P(women) - P(both) |58 + 48 - 23 १55 55 १९७ 2Sbo 20.5864 १ P all three are men) 7 ५०८५ ०५:१४५68 ११rix953 4553 20. 1128 (theavy woman) = Pl heavy &Woman) Plwoman) 84_2014 185 20/PAN