Question

sum of probabilities of all outcomes of a trial is

Answer 1

1) The probability than any one of a given group of mutually exclusive possible outcomes will actually occur in a given experiment, is the sum of the individual probabilities for each outcome in the group.

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Answer 2

Step-by-step explanation:

In a specific trial the sum of probabilities of all outcomes of trial is 1.

Probability never exceeds 1. So 1 is the correct answer.

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