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Test Bank for Essentials of Statistics - Chapter 4 (7th edition by Mario F. Triola)
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Test Bank for Essentials of Statistics - Chapter 4 (7th edition by Mario F. Triola)
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Test Bank for Essentials of Statistics -Chapter 4 (7th edition by Mario F. Triola)
Event - ANSany collection of results or outcomes of a procedure.
Simple Event - ANSan outcome or event that cannot be further broken down into simpler
components.
Sample Space - ANSconsists of all possible simple events. cannot be broken down any further.
P - ANSprobability.
A, B and C - ANSdenote specific events.
P(A) - ANSdenotes the probability of "event A" occuring.
Relative Frequency Approximation of Probability - ANSP(A) is approximated by: number of
times A occurred/number of times procedure was repeated (approximation.)
Classical Approach to Probality - ANSrequires equally likely outcomes. P(A) = number of ways
A can occur/number of different simple events.
Subjective Probabilities - ANSP(A) is estimated by using knowledge of the relevant
circumstances.
Law of Large Numbers - ANSrelative frequency approximations tend to get better with more
observations. the more trials, the more accurate.
Probability of an impossible event - ANS0
The probability of an event that is certain to occur - ANS1
Complementary Events - ANSAll outcomes in which event A does not occur. Denoted by Ā. A
and Ā are disjoint.
Rounding Off Probabilities - ANSRound off to the nearest three significant digits.
Actual odds against event A occuring - ANSP(Ā)/P(A) aka a:b (a to b)
Actual odds in favor of event A occuring - ANSP(A)/P(Ā) aka b:a (b to a)
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