The table lists the drinking habits of a group of college students. A) If a stud

Question

The table lists the drinking habits of a group of college students. A) If a student is chosen at random, find the probability of getting someone who is a woman or a heavy drinker. B) If a student is chosen at random, find the probability- of getting someone who is a woman given that she is a heavy drinker. C) A student is chosen at random. Given that student is a man, what is the probability that he would be regular drinker? D) If a student is chosen at random, find the probability- of getting someone who is a woman and non- drinker. E) If a student is chosen at random, find the probability- of getting someone who is a woman given that she is a regular drinker.

Explanation / Answer

A) P(woman or heavy drinker) = (220+5)/421 = 0.5344

B) P(woman | heavy drinker) = Number of heavy drinker women/total number of heavy drinkers

= 12/17 = 0.7059

C) P(regular drinker | man) = 61/201 = 0.3035

D) P(woman and non drinker) = 187/421 = 0.4442

E) P(woman | regular drinker) = 21/82 = 0.2561

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