The table below describes the smoking habits of a group of a

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

If one of the 1,044 people is randomly selected, find the probability that the person is a man or a heavy smoker.

A.0.573

B.0.606

C.0.486

D.0.539

Solution

P (Person is a Man) = 561/ 1044

P(Person is a heavy smoker) = 72/1044

P( Man and Heavy Smoker) = 35/1044

P( Man or a heavy smoker ) = P (Person is a Man) + P(Person is a heavy smoker) - P( Man and Heavy Smoker) = 561/ 1044+72/1044-35/1044 = (561+72-35)/1044 = 0.5727 ~ 0.573