• 1 Marks

QTB – Nov 2014 – L1 – SA – Q1 – Probability

Determines the correct definition of mutually exclusive events.

Two events are said to be mutually exclusive if
A. The occurrence (or non-occurrence) of one event does not affect the occurrence (or non-occurrence) of the other event
B. Both events can occur simultaneously
C. The occurrence of one event precludes the occurrence of the other event
D. Both are impossible events

C

Explanation: The correct answer is C because mutually exclusive events mean that the occurrence of one event prevents the occurrence of the other. For example, flipping a coin cannot result in both heads and tails at the same time; if heads occur, tails cannot happen, and vice versa.

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