Lecture 4 Part 2 Stats

orderings, permutations

orderings, permutations

A second useful counting rule follows from the mn Rule and involves ________ or ________.

combinations

Sometimes the ordering or arrangement of the objects is not important, but only the objects that are chosen. In this case, you can use a counting rule for ________.

mutually exclusive, disjoint

When two events A and B are ________ or ________, it means that when A occurs, B cannot, and vice versa.

union

The ________ of events A and B, denoted by A u B, is the event that either A or B or both occur

intersection

The ________ of events A and B, denoted by A n B, is the event that both A and B occur

complement

The ________ of an event A and B, denoted by A^c, is the event that A does not occur

mutually exclusive

When two events A and B are ________ , then P(A n B) = 0 and the Addition Rule simplifies to P(A n B) = P(A) + P(B)

independent, dependent events

There is a rule that can be used to calculate the probability of the intersection of serval events. This rule depends on the concept of ________ or ________.

independent

Two events, A and B, are said to be ________ if and only if the probability of event B is NOT influenced or changed by the occurrence of event A, or vice versa.