Chapter 4

Question 1

The proportion of times the outcome would occur in a very long series of repetitions.

Answer 1

Probability

Question 2

The outcome of a new trial that is not influenced by the result of the previous.

Answer 2

Independent event.

Question 3

When you replace the variable after each trial.

Answer 3

Sampling With Replacement

Question 4

Symbol for # of trials.

Answer 4

n

Question 5

Symbol for outcome.

Answer 5

X

Question 6

Equation for relative frequency of X.

Answer 6

n

Question 7

Two events that have no outcomes in common and can never happen together.

Answer 7

Disjoint.

Question 8

The event that A does not occur, written as Ac.

Answer 8

Complement.

Question 9

Some combination of two or more simple events.

Answer 9

Compound event.

Question 10

Can’t reduce or make any more fundamental than you’ve already done.

Answer 10

Simple event.

Question 11

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

Answer 11

Multiplication rule for independent events.

Question 12

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

Answer 12

Additional rule for Disjoint events.

Question 13

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

Answer 13

General addition rule for any two events.

Question 14

Reflect how the P of an event can change if we know that some other event has occurred.

Answer 14

Conditional Probabilities.

Question 15

P(A/B) = P(A and B) // P(A)

Answer 15

Equation for conditional probability.

Question 16

P that ANY two events happen together.

Answer 16

Multiplication Rule.

Question 17

Variable is a numerical outcome of a random phenomenon.

Answer 17

Random Variable.

Question 18

Possible values that can be given in an ordered list; finite # of possible values; non-negative; P’s must add up to 1.

Answer 18

Discrete Random Variable

Question 19

Takes all values in an interval; unaccountably infinite # of possible values

Answer 19

Continuous Random Variable.