Lecture 10 - Expectation of a Random Variable

Lecture 10 - Expectation of a Random Variable - 1...

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1.1 Expectation of a Random Variable 1 EXPECTATION question 1, worth 200, correctly and he is 80% certain of answering question 2, worth 100, correctly, then he should attempt to answer question 2 ﬁrst, because 100 * 0 . 8 / 0 . 2 > 200 * 0 . 6 / 0 . 4 Sometimes it is diﬃcult to compute the expectation of a random vari- able by following the deﬁnition. There are alternate approaches to compute expectation. The next example deals with one such case. Example
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This note was uploaded on 12/09/2011 for the course IMSE 0301 taught by Professor Song during the Spring '11 term at HKU.

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Lecture 10 - Expectation of a Random Variable - 1...

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