Set Theory Probability

The measure of the likelihood that an event will occur. The chance that an event will happen. A ratio of chance/all chances.

• odds

• probability

• outcomes

• tree diagram

There are 6 boys and 8 girls in a classroom. What is the probability that the teacher randomly selects a boy?

• ⁸/₆

• ⁶/₈

• 3/7

• ⁸/₁₄

X ∩ Y ∩ Z

• { }

• {Phillip}

• {Billy, Phillip, Bryan, Perez}

• {Billy, Perez, Bryan}

What is the sample space?

• 6 bears

• orange, green, red, white, yellow

• 2 red, 1 green, 1 orange, 1 yellow, 1 white

• 2 , 1, 1, 1, 1

Theoretically, what is the probability of rolling a sum of one with a pair of dice?

• 0

• 1/6

• 1/12

• 1/36

Set B is defined as students that play basketball. What is the P(B)?

• 56/135

• 52/135

• 64/135

• 63/135

A = {1, 3, 5, 7, 9}
B = {2, 3, 5, 7}
What is A ∩ B ?

• {3, 5, 7}

• {2, 3, 5, 7}

• {2, 3, 5, 7, 9}

• {1, 2, 3, 5, 7, 9}

What statement does the shaded region represent?

• A or B

• A and B

• A

• B

Find the probability of not rolling a 2 on a single die.

• 1/6

• 2/6

• 5/6

• 2

What is the probability of spinning green?

• 0

• 1/4

• 1/2

• 3/4