Problem based on Addition theorem on probability.
The table lists the smoking habits of group college students.
Sex

Nonsmoker

Regular Smoker

Heavy Smoker

Total

Man

135

41

5

181

Woman

187

21

12

220

Total

322

62

17

401

If a student is chosen at random, find out the probability of getting someone who is a man or a woman. Round the answer to three decimal places.