AP Stats Unit 3

Sample Space

the collection of all possible outcomes of a chance experiment

Sample Space

Roll a die: S = {1,2,3,4,5,6}

Event

any collection of outcomes from the sample space

Simple Event

Rolling a “2” E = {2}

Complement

Consists of all outcomes that are not in the event

Complement

Rolling an even number

E = {2,4,6}

E^C = {1,3,5}

Union

the event A or B happening; consists of all outcomes that are in at least one of the two events

Union

Rolling a prime number or even number E={2,3,4,5,6}

Intersection

the event A and B happening; consists of all outcomes that are in both events

Intersection

Drawing a red card and a “2” E = {2 hearts, 2 diamonds}

Mutually Exclusive (disjoint)

two events have no outcomes in common

Mutually Exclusive (disjoint)

Roll a “2” and a “5” (with one roll of a single die)