78 Unit 1 Probability Summative Study Guide

Which spinners represent a non-uniform probability model?

• spinners A, B, and D

• spinners A, B, and C

• spinner C

• spinners A and D

Tags

CCSS.7.SP.C.7B

Which situation represents an event from a non-uniform probability model?

• rolling a 2 on a six-sided die

• landing on heads from a flip of a coin

• spinning yellow on a spinner with 4 equal parts

• picking a blue tile from a bag that contains 5 red tiles and 3 blue tiles

Tags

CCSS.7.SP.C.7B

A box of 16 chocolates contains an equal number of strawberry, cherry, raspberry, and blueberry filled candies. What is the probability of randomly selecting a raspberry filled candy?

• 1/16

• 1/4

Tags

CCSS.7.SP.C.7A

James needs a red on his next spin to move ahead of Rey. What is the probability that James will get a red on his next spin?

• 0.10

• 0.125

• 0.5

• 0.375

Tags

CCSS.7.SP.C.7A

Later in the game, Rey needs to land on yellow on his next spin to win the game. What is the probability that Rey will NOT win the game on his next spin?

• 0.125

• 0.875

• 0.50

• 0.625

Look at the spinner and the table of observed frequencies.

Do the outcomes for spinning the spinner appear to be equally likely based on the data in the table?

• Yes, because all 6 sections are about equal.

• Yes, because there are 6 different sections.

• No, because the observed frequencies are different.

• No, because there are 6 different sections.

Based on the results in the table, what is the probability of the spinner landing on green? (as a decimal to the nearest hundredth)

• 0.20

• 0.22

• 0.24

• 0.26

Tags

CCSS.7.SP.C.6

On a basketball team with 12 players, 6 own a dog, 2 own a cat, 1 owns a fish, 2 own rabbits, and 1 doesn’t own a pet at all. What is the probability of a member of the basketball team owning a cat?

• A. 1/12

• B. 1/2

• C. 1/6

• D. 4/12

Tags

CCSS.7.SP.C.7B

A number cube with faces numbered 1 to 6 is rolled 12 times. In theory, how many times would you expect to roll a number greater than than 4?

• 2

• 4

• 6

• 8

Tags

CCSS.7.SP.C.6

Kimbo will toss a coin in the air 620 times. What is the best prediction for the number of times it will land on tails?

• Exactly 310 times

• Exactly 300 times

• Close to 300 times but probably not exactly 300 times

• Close to 310 times but probably not exactly 310 times

Tags

CCSS.7.SP.C.6