Probability Test Review

In a bag of 12 marbles, there are 6 blue and 6 red. Paul randomly selects 4 blue marbles and 6 red marbles and does not put them back in the bag. What is the likelihood Paul will select a blue marble his next try?

• Certain

• Likely

• Unlikely

• Impossible

When rolling a fair number cube that is numbered 1-6, which event is impossible?

• rolling an odd number

• rolling an even number

• rolling a number less than 7

• rolling a number greater than 6

Which value does not represent the probability of an event?

• 0.0

• 0.5

• 1.0

• 2.0

A bookshelf contains 6 fiction books, 2 nonfiction books, 1 picture book. A book is chosen at random. What is the likelihood of choosing a fiction book?

• impossible

• not very likely

• likely

• certain

Ramon makes a spinner with 4 colors. he colors 25% of the spinner red, 15% blue, 40% orange, and the rest green. Ramon then spun the spinner. Which outcome would be most likely to happen?

• the spinner landing on green or red

• the spinner landing on green or blue

• the spinner landing on orange or red

• the spinner landing on orange or blue

A bag contains 6 blue chips, 3 red chips, 9 green chips, and 2 yellow chips. John pulls a chip out, records the color, and returns the chip to the bag. He does this 200 times. How many times should John expect the color to be blue, red, or yellow?

• 90

• 110

• 120

• 150

Robert rolls a number cube, labeled 1 to 6, a total of 200 times. About how many times could Robert expect to roll a number greater than 4?

• 30

• 50

• 70

• 100

A number cube has sides labeled 1 to 6. Sue will roll the cube 48 times. How many times should Sue expect to roll a 5?

• 5

• 7

• 8

• 10

The theoretical probability of tossing two heads when tossing a pair of coins is 0.25. When the pair of coins was tossed 20 times, two heads came up only 2 times. Which procedure would result in an experimental probability that is closer to the theoretical probability?

• toss the coin more than 20 times

• toss 3 coins instead of 2

• toss the coin fewer than 20 times

• count only those tosses that result in 2 heads or two tails

Kaitlyn has 7 white chips, 5 red chips, and 8 blue chips in a bag. Without looking, Kaitlyn pulls a chip out, records the color, and puts it back in the bag. She does this 200 times. About how many times could Kaitlyn expect to pull out a blue chip?

• 25

• 65

• 80

• 120