Answer Key:
1. 33/48
2. choosing one of four partners in square dancing
3. 60 ways
4. 1/15
5. 5%
6. 6
7. 48
8. You choose 2 different ice cream flavors.
9. 1/4
10. 5,040 ways
1. Tasha and Lee played a series of games against each other. Tasha won three more than twice as many games as Lee. Lee won 15 games. Find the probability that Tasha won a game.
15/35
15/48
33/48
2/15
2. Which situation can be modeled by tossing a number cube twice?
deciding which English teacher of eight will win a trip to London
selecting a desk from thirty-six in a classroom
receiving rain on any day if the chance of rain is 40%
choosing one of four partners in square dancing
3. Ms. Lawton is redecorating her office. She has a choice of 5 colors of paint, 3 kinds of curtains, and 4 colors of carpet. How many different ways are there to redecorate?
30 ways
75 ways
60 ways
12 ways
4. A bag contains 4 yellow marbles and 6 green marbles. Two marbles are drawn at random. One marble is drawn and not replaced. Then a second marble is drawn. What is the probability that the first marble is green and the second one is yellow?
4/15
3/2
1/15
1/6
5. You work at a T-shirt printing business. 175 of 3,500 T-shirts shipped are printed improperly. What is the experimental probability that a T-shirt is printed improperly?
6%
1.75%
5%
35%
6. What is the number of permutations that can be made using the letters PEN?
*
3
8
6
1
7. A lunch menu has 4 different sandwiches, 3 different soups, and 4 different drinks. How many choices are there for ordering a sandwich, a bowl of soup, and a drink?
64
11
48
19
8. Which event is independent?
You choose 2 different ice cream flavors.
You study English 20 min nightly, then you get an A on the next test.
You draw a card from a deck, replace it and draw a second.
You draw a card and don't replace it. Then you draw another.
9. A coin is tossed and a number cube is rolled. What is the probability that the coin shows heads and the number cube shows an odd number?
1/4
1/12
1
1/6
10. How many different ways can you arrange seven songs on a CD?
14 ways
5,040 ways
49 ways
28 ways
9 answers
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6. Which events are independent?
You choose 2 different ice cream flavors.
You study English 20 min nightly, then you get an A on the next test.
You draw a card from a deck, replace it and draw a second.
You draw a card and don't replace it. Then you draw another.
You choose 2 different ice cream flavors.
You study English 20 min nightly, then you get an A on the next test.
You draw a card from a deck, replace it and draw a second.
You draw a card and don't replace it. Then you draw another.
Event (a) You choose 2 different ice cream flavors and event (c) You draw a card from a deck, replace it and draw a second are independent events.