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Unformatted text preview: 2 Example 1: Let X be the sum of the faces of two dice. Probability distribution: x 2 3 4 5 6 7 8 9 10 11 12 ) ( x X P = 1/36 2/36 3/36 4/36 5/36 6/36 5/36 4/36 3/36 2/36 1/36 Evaluate the following using the histogram. a) ) 8 ( = X P b) ) 8 or 6 ( = = X X P c) ) 10 5 ( X P d) ) 9 ( X P Section 8.1 Distributions of Random Variables 3 Example 2: The rates paid by 30 financial institutions on a certain day for moneymarket deposit accounts are shown in the accompanying table: Rate, % 6 6.25 6.55 6.56 6.58 6.60 6.65 6.85 Number of Institutions 1 7 7 1 1 8 3 2 a. Let the random variable X denote the interest paid by a randomly chosen financial institution on its moneymarket deposit accounts and find the probability distribution associated with these data. b. Draw the histogram associated with these data. c. Find: P(6.55 < X < 6.58) P(X > 6.25)...
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 Spring '08
 CONSTANTE
 Math

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