Probability (Add and Mult)

1.

a. A bag contains 44 greengreen marbles, 99 yellowyellow marbles, and33 blackblack marbles. If a marble is drawn from the bag, replaced, and another marble is drawn, what is the probability of drawing first a greengreen marble and then a blackblack marble?

b. A bag contains 99 redred marbles, 33 blackblack marbles, and44 yellowyellow marbles.If two different marbles aredrawn from the bag , what is the probability of drawing first a redred marble and then a yellowyellow marble?

_________________ Probability (basic)

1. The table summarizes results from 983 pedestrian deaths that were caused by automobile accidents.

Driver Intoxicated?	Pedestrian Intoxicated?
Yes	No
Yes	42	72
No	215	654

If one of the pedestrian deaths is randomly selected, find the probability that neither the pedestrian nor the driver was intoxicated. Please enter a decimal to 4 places. Probability =

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2. The table summarizes results from 976 pedestrian deaths that were caused by automobile accidents.

Driver Intoxicated?	Pedestrian Intoxicated?
Yes	No
Yes	45	86
No	216	629

If one of the pedestrian deaths is randomly selected, find the probability that the pedestrian was not intoxicated or the driver was not intoxicated. Please enter a decimal to 4 decimal places. Probability =

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3. A survey of athletes at a high school is conducted, and the following facts are discovered: 40% of the athletes are football players, 11% are basketball players, and 8% of the athletes play both football and basketball. An athlete is chosen at random from the high school: what is the probability that the athlete is either a football player or a basketball player? Probability = _______ % (Please enter your answer as a percent)

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4. A store manager gathers some demographic information from the store's customers. The following chart summarizes the age-related information they collected:

Age	Number of Customers
<20<20	83
20-29	59
30-39	60
40-49	66
50-59	68
6060	94

One customer is chosen at random for a prize giveaway. (Round answers to 4 decimal places.) a. What is the probability that the customer is at least 20 but no older than 49? b. What is the probability that the customer is either older than 60 or younger than 40? c. What is the probability that the customer is at least 60?

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