Statistics Chapter 5 Probability Flashcards
1
Q
what is an experiement?
A
a repeatable process that gives rise to a number of outcomes
2
Q
what is an event?
A
a collection of one or more outcomes
3
Q
what is a sample space?
A
the set of all possible outcomes
4
Q
what is the probability of an event if all outcomes are equally likely?
A
number of outcomes in the event divided total number of possible outcomes
5
Q
what is the formula for P(A or B) for mutually exclusive events?
A
P(A or B) = P(A) + P(B)
6
Q
what is the formula for P(A and B) for independent events?
A
P(A and B) = P(A) x P(B)
7
Q
what can a tree diagram be used to represent?
A
the outcomes of 2+ events happening in sucession
