In a random sample of 1,000 people, it is found that 7.7% have a
liver ailment. Of those who have a liver ailment, 6% are heavy
drinkers, 55% are moderate drinkers, and 39% are nondrinkers. Of
those who do not have a liver ailment, 9% are heavy drinkers, 45%
are moderate drinkers, and 46% are nondrinkers. If a person is
chosen at random, and he or she is a heavy drinker, what is the
probability of that person having a...