Probability Area Model

40% of students in a school wore blue on a Spirit Day. If two students are randomly selected, what is most likely the probability that both students will not be wearing blue?

• 16%

• 36%

• 40%

• 60%

Based on the area model, what percent is left handed and has a sibling?

• 8%

• 72%

• 2%

• 18%

What is P(Cave B)?  Reduce fractions if possible.

• ⁷/₁₈

• ⁴/₉

• ¹/₃

• ¹/₂

Find P(Chamber A). Reduce fractions if possible.

• ¹/₂

• ¹/₃

• ³/₄

• ⁵/₈

Find P(Chamber B). Reduce fractions if possible.

• ¹/₂

• ⁷/₁₈

• ⁴/₉

• ⁵/₁₈

Find P(Chamber C). Reduce fractions if possible.

• ¹/₂

• ²/₉

• ⁴/₉

• ⁵/₁₈

Draw an area model that represents the possibilities of ending in Chamber A, Chamber B, or Chamber C (used in multiple questions).
If 50 people walked this maze (based on probability) how many should end up in Chamber A?

• Not enough information

• 20

• 18

• 25

Draw an area model that represents the possibilities of ending in Chamber A, Chamber B, or Chamber C (used in multiple questions).
If 50 people walked this maze (based on probability) how many should end up in Chamber B?

• 16

• 14

• Not enough information

• 25

Draw an area model that represents the possibilities of ending in Chamber A, Chamber B, or Chamber C (used in multiple questions).
If 50 people walked this maze (based on probability) how many should end up in Chamber C?

• 11

• 14

• 15

• Not enough information

What is P(Cave A)?  Reduce fractions if possible.

• ⁵/₉

• ¹/₂

• ⁷/₁₈

• ¹/₃