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In: Statistics and Probability

The table below describes the smoking habits of a group of asthma sufferers. Use this table...

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

330

75

65

470

Women

315

83

87

485

Total

645

158

152

955

  1. If one of the subjects is randomly selected, find the probability that he/she is a light smoker or a woman.                                                                                                 (5)
  1. If 3 of the subjects are randomly selected, find the probability that they are all men.                                                                                                                                              (5)

If one of the subjects is randomly selected, find the probability that she is a heavy smoker given that she is a woman.

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