Describing Events as Subsets of a Sample Space Using Characteristics of Outcomes

If A = {1, 3, 5, 7, 9} and 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}

1. Suppose we have two sets of students involved in different extracurricular activities in a school. Set A represents students in the Chess Club, and Set B represents students in the Drama Club.

A = {John, Emma, Sarah, Michael} , B = {Emma, Michael, Olivia, Ethan}

What is A U B ?

• {Emma, Sarah, Michael, Olivia, Ethan}

• {John, Emma, Sarah, Michael, Olivia, Ethan}

• {John, Sarah, Michael, Olivia, Ethan}

• {John, Emma, Olivia, Ethan}

What is L ∪ R?

• ∅

• {gloves, paper, coins, phone}

• {pencils, erasers, pens}

• {pencils, erasers, pens, gloves, paper, coins, phone}

Let A be the event that a die lands on a number greater than 3. Let B be the event that the die lands on a multiple of 2. Which are the possible outcomes of A ∩ B? Select the two that apply.

• 2

• 3

• 4

• 5

• 6

The question is an intersection and asks you to calculate P(A and B).

• 0.1

• 0.3

• 0.9

• 0.08

If you’re flipping a coin and rolling a die, what does 𝑃(𝐻 ∩ 3) mean?

• Probability of getting a heads or a 3

• Probability of getting a heads and a 3

• You’re going to get a heads and a 3

• Heads and 3

Which symbol is used to denote the union of two sets?

Let C={2, 5, 7, 10} and B={1, 3, 5, 7, 9}. Find C ∩ B

• {1,2,3,5,7,9,10}

• {2,4,5,6,7,8,10}

• {5,7}

Tags

CCSS.HSS.CP.A.1

Which is the correct set notation for A intersection B ?

• {12, 14, 15, 18, 21}

• {10, 11, 12, 14, 15, 18, 21}

• {10, 11, 13, 16, 17, 19, 20}

• {12, 14, 15}