Statistics Chapter 5 Probability

Question 1

what is an experiement?

Answer 1

a repeatable process that gives rise to a number of outcomes

Question 2

what is an event?

Answer 2

a collection of one or more outcomes

Question 3

what is a sample space?

Answer 3

the set of all possible outcomes

Question 4

what is the probability of an event if all outcomes are equally likely?

Answer 4

number of outcomes in the event divided total number of possible outcomes

Question 5

what is the formula for P(A or B) for mutually exclusive events?

Answer 5

P(A or B) = P(A) + P(B)

Question 6

what is the formula for P(A and B) for independent events?

Answer 6

P(A and B) = P(A) x P(B)

Question 7

what can a tree diagram be used to represent?

Answer 7

the outcomes of 2+ events happening in sucession