Here is a scenario that came up in the nationally syndicated column called "Ask Marilyn" in Parade Magazine . Suppose a certain drug test is 95% accurate, meaning that if a person is a user, the result is positive 95% of the time, and if she or he isn\'t a user, it\'s negative 95% of the time. Assume that 5% of all people are drug users.

Assume that the population is 10,000, and fill in the accompanying table

	Drug user	Not a drug user	Totals
Test positive
Test negative
Totals