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

• 4, 0, -9, 7

• 0, 4

• 4, 0, -9, 7, 2, 6

• 2, 4, 6, 7

Answer explanation

This is asking for the union! All elements, with no repeats

Given the sets: What is A∪B equal to?

• { 5 } 

Answer explanation

"A ∪ B" is read:

"A union B"

or as

"the union of A and B"

The result of "A ∪ B" is a set that contains the elements that are in either A OR S.

In this case, since the numbers 1, 2, and 3 are in set A, the resulting set will contain all these numbers:

{ 1, 2, 3 }

We should then include all the numbers from set B. Since number 2 is already included, we just need to add numbers 4, and 6, so the final result is:

{ 1, 2, 3, 4, 6 }

Tags

CCSS.HSS.CP.A.1

Intersection of A and B" and "P(A & B)" mean...

• P(A) + P(B)

• 1- P(A)

Intersection of A and B means...

• P(A) + P(B)

• 1- P(A)

Intersection of A and B" and "P(A & B)" mean...

• P(A) + P(B)

• 1- P(A)

Given P(A)=0.1 and P(B)=0.23, find P(A∩B).

• 0.023

• 0.33

• 0.1

• 0.025

Tags

CCSS.HSS.CP.B.8

Given P(A)=0.25 and P(B)=0.3, find P(A∩B).

• 0.075

• 0.055

• 0.015

• 0.025

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.B.8

• The set of all even numbers.

• The set of all multiples of 3.

• The set of all numbers that are either even or multiples of 3.

• The set of all numbers that are both even and multiples of 3.

Which of the following statements is true about the intersection of sets?

• The intersection of two sets is always greater than or equal to the individual sets.

• The intersection of two sets is always equal to the union of the sets.

• The intersection of two sets is always smaller than or equal to the individual sets.

• The intersection of two sets is always empty.