Chapter 5

Question 1

probability

Answer 1

any outcome of a chance process (number between o and 1) that describes the proportion of times the outcome would occur in a very long series of repetitions.

Question 2

sample space S

Answer 2

the set of all possible outcomes in a chance process

Question 3

probability model

Answer 3

a description of some chance process that consists of two parts: a sample space S and a probability for each outcome

Question 4

event

Answer 4

collection of outcomes from some chance process. It is a subset of the sample space. Usually designed by capital letters, like A, B, C, etc…

Question 5

mutually exclusive (disjoint)

Answer 5

two events that have no outcomes in common and can never occur together

Question 6

conditional probability

Answer 6

the probability that one event happens given that another event is already know to have happened. A has happened, the probability that event B happens given that event A has happened is written as P(B/A)

Question 7

independent events

Answer 7

the occurrence of one event has no effect on the chance that the other even will happen. Determined if P(A/B)=P(A) and P(B/A)=P(B)

Question 8

complement of the event

Answer 8

all outcomes that are NOT the event