Q: Twenty percent of cars that are inspected have faulty pollution control systems
Twenty percent of cars that are inspected have faulty pollution control systems. The cost of repairing a pollution control system exceeds $100 about 40% of the time. When a driver takes her car in for...
See AnswerQ: You are dealt a hand of three cards, one at a
You are dealt a hand of three cards, one at a time. Find the probability of each of the following. 1. The first heart you get is the third card dealt. 2. Your cards are all red (that is, all diamonds...
See AnswerQ: You pick three cards at random from a deck. Find the
You pick three cards at random from a deck. Find the probability of each event described below. 1. You get no aces. 2. You get all hearts. 3. The third card is your first red card. 4. You have at leas...
See AnswerQ: A junk box in your room contains a dozen old batteries,
A junk box in your room contains a dozen old batteries, five of which are totally dead. You start picking batteries one at a time and testing them. Find the probability of each outcome. 1. The first t...
See AnswerQ: The soccer team shirts have arrived in a big box, and
The soccer team shirts have arrived in a big box, and people just start grabbing them, looking for the right size. The box contains 4 medium, 10 large, and 6 extra-large shirts. You want a medium for...
See AnswerQ: A university requires its biology majors to take a course called BioResearch
A university requires its biology majors to take a course called BioResearch. The prerequisite for this course is that students must have taken either a statistics course or a computer course. By the...
See AnswerQ: Fifty-six percent of all American workers have a workplace retirement
Fifty-six percent of all American workers have a workplace retirement plan, 68% have health insurance, and 49% have both benefits. We select a worker at random. 1. What the probability he has neither...
See AnswerQ: A survey found that 73% of Americans have a home phone
A survey found that 73% of Americans have a home phone, 83% have a cell phone and 58% of people have both. 1. If a person has a home phone, what the probability that they have a cell phone also? 2. Ar...
See AnswerQ: According to Exercise 16, the probability that a U.S
According to Exercise 16, the probability that a U.S. resident has traveled to Canada is 0.18, to Mexico is 0.09, and to both countries is 0.04. 1. What the probability that someone who has traveled t...
See AnswerQ: American League baseball games are played under the designated hitter rule,
American League baseball games are played under the designated hitter rule, meaning that pitchers, often weak hitters, do not come to bat. Baseball owners believe that the designated hitter rule means...
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