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Unformatted text preview: 31 Discrete Random Variables31 Discrete Random VariablesExample 3132 Probability Distributions and Probability Mass FunctionsFigure 31Probability distribution for bits in error.32 Probability Distributions and Probability Mass FunctionsFigure 32Loadings at discrete points on a long, thin beam.32 Probability Distributions and Probability Mass FunctionsDefinitionExample 35Example 35 (continued)Example Toss a fair coin three times and define x= number of heads.1/81/81/81/81/81/81/81/8P(x = 0) = 1/8P(x = 1) = 3/8P(x = 2) = 3/8P(x = 3) = 1/8P(x = 0) = 1/8P(x = 1) = 3/8P(x = 2) = 3/8P(x = 3) = 1/8HHHHHHHHTHHTHTHHTHTHHTHHHTTHTTTHTTHTTTHTTHTTTTTTx32221111/833/823/811/8f(x)xProbability Histogram for xProbability Histogram for x33 Cumulative Distribution FunctionsDefinitionExample 38Example 38Figure 34Cumulative distribution function for Example 38.34 Mean and Variance of a Discrete Random VariableDefinition34 Mean and Variance of a Discrete Random VariableFigure 35A probability distribution can be viewed as a loading...
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This note was uploaded on 09/21/2010 for the course EIN 3235 taught by Professor Zhai during the Spring '10 term at FIU.
 Spring '10
 Zhai

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