Probability Unit Review

A bag contains 15 blue blocks, 20 red blocks and 35 yellow blocks. Each block is the same shape and size. What is the probability that a red block will be chosen at random?

• P(red block) = 2/7

• P(red block) = 3/14

• P(red block) = 1/3

• P(red block) = 2/5

A bag contains 15 blue blocks, 20 red blocks and 35 yellow blocks. Each block is the same shape and size. Do the three colors have an equally likely chance of being chosen?

• Yes the colors are equally likely, because each color is they are all primary colors.

• Yes the colors are equally likely, because you never know what can happen.

• No the colors are not equally likely because blue is everyone’s favorite color.

• No the colors are not equally likely because there are a different amount of each color blocks.

In a game of chance, players spin a pointer on a spinner as shown. Which Probability is INCORRECT?

• P(1) = 1/2

• P(2) = 1/3

• P(3) = 1/6

• P(even number) = 1/3

In a game of chance, players spin a pointer on a spinner as shown. Choose the correct probabilities in percent form.

• P(1) = 50%, P(2) = 33%, P(3) = 33%, P(4) = 33%

• P(1) = 25%, P(2) = 25%, P(3) = 25%, P(4) = 25%

• P(1) = 50%, P(2) = 16.6%, P(3) = 16.7%, P(4) = 16.7%

• P(1) = 33%, P(2) = 33%, P(3) = 33%, P(4) = 33%

The letters that form the word ALGEBRA are placed in a bowl. What is the probability of choosing a letter other than “A”? 

• 2/7
• 5/49
• 5/7
• 10/49

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

• 1/48
• 1/6
• 1/8
• 1/24

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.6

CCSS.7.SP.C.8

A fair number cube is rolled 60 times. The results of the experiment are shown. For which side of the number cube were the experimental and theoretical probability the closest?

• 2
• 5
• 4
• 3

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.6

CCSS.7.SP.C.7

P(not A) = 
*Remember to simplify.*

• 6/8
• 3/4
• 2/8
• 1/4

Tags

CCSS.7.SP.C.5

Which of the following situations is represented by this tree diagram?

• 3 shirt options, 6 pants options, and 12 shoe options
• 3 shirt options, 2 pants options, and 2 shoe options
• 2 shirt options, 3 pants options, and 1 shoe option

Tags

CCSS.7.SP.C.8

The probability that Pedro will hit a hole in one at the golf course is ⅖.  If Pedro goes golfing 40 times in a year, how many times can he expect to hit a hole in one?

• 24
• 40
• 25
• 16

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

CCSS.7.SP.C.5

CCSS.7.SP.C.7