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Chapter 1 5 Probability

Probability: Probability is a quantitative measure of certainty.

Experiment: A job which produces some outcomes.

Trial: Performing an experiment.

Event: The group of outcomes, denoted by capital letter of English alphabets like A, B, E etc.

The empirical (or experimental) probability P(E) of an event E is given by

The probability of an event lies between 0 and 1 (0 and 1 are included)

Impossible event: Event which never happen.

Certain event: Event which definitely happen.

The probability of sure event is 1.

The probability of an impossible event is 0.

The probability of an event E is a number P(E) such that 0 < P(E) < I.