Topics
9. Probability and Statistics
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United States of America
Grades 9-12

9.02 Fair decisions using probability

Lesson
Practice
Adaptive
Worksheet

Interactive practice questions

Select the two events which have a probability of $25%$25% on this spinner:

A colorful prize wheel with three distinct sections, each a different color and featuring a unique symbol. The largest section is red with a orange ball symbol, occupying about half of the wheel. The yellow section features a red apple, and the blue section has a blue pig symbol; both of these sections are smaller and appear to be equal in size, each making up a quarter of the wheel.

A red apple

A

An orange ball

B

A blue pig

C

A green star

D
Medium
< 1min

Select the spinner where the event A green star. has a probability of $0.5$0.5:

Medium
< 1min

Look at this spinner and answer the following questions:

Medium
1min

Look at this spinner and answer the following questions:

Medium
2min
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Outcomes

S.IC.A.2

Decide if a specified model is consistent with results from a given data-generating process, e.g. Using simulation.

S.MD.B.6 (+)

Use probabilities to make fair decisions.

S.MD.B.7 (+)

Analyze decisions and strategies using probability concepts.

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