Rico is making lunch for 18 people. how much punch should rico make if each person will drink 1/6 of a gallon? a: 2 gallons | b. 3 gallons | c. 4 gallons | d. 5 gallons

100,000 random people were tested for condition a. roberto's doctor told him he tested positive for condition a. if the test is 99% accurate and condition a is rare—one out of every thousand people have it. what is the probability that testing positive means roberto has condition a? 99.0% 1% 9% 99.9%