{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

stats_review_card_triola

# Relative frequency number of times a occurred p1a2

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: event is extremely small, conclude that the assumption is probably not correct. Relative Frequency: number of times A occurred P1A2 = number of trials Classical Approach: s P 1 A2 = (equally likely outcomes) n Probability property: 0 … P 1A2 … 1 Complement of Event A: P1A2 = 1 - P 1A2 Addition Rule: Disjoint Events: Cannot occur together. If A, B are disjoint: P1A or B2 = P1A2 + P1B2 If A, B are not disjoint: P1A or B2 = P1A2 + P1B2 - P1A and B2 Multiplication Rule: Independent Events: No event affects probability of other event. If A, B are independent: P1A and B2 = P1A2 # P1B2 If A, B are dependent: P1A and B2 = P1A2 # P1B ƒ A2 Random Variables Random Variable: Variable that has a single numerical value, determined by chance, for each outcome. Probability Distribution: Graph, table, or formula that gives the probability for each value of the random variable. Requirements of random variable: 1. g P1x2 = 1 2. 0 … P1x2 … 1 Parameters of random variable: m = g x # P1x2 2 C n1 + Two Means (Independent): 1 x1 - x22 - E 6 1m1 - u22 6...
View Full Document

{[ snackBarMessage ]}