Download e-book for iPad: Schaum's Outline of Probability, Random Variables, and by Hwei Hsu

By Hwei Hsu

ISBN-10: 0070306443

ISBN-13: 9780070306448

Designed for college students in quite a few disciplines of engineering, technological know-how, arithmetic, administration and company, this powerful learn instrument comprises hundreds of thousands of issues of step by step suggestions and one other one hundred fifty issues of tricks or not on time solutions. The solved difficulties illustrate and strongly toughen important idea and strategies. themes taught comprise capabilities of random variables; expectation and restrict theorems; and estimation conception, selection conception and queuing concept.

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Extra info for Schaum's Outline of Probability, Random Variables, and Random Processes (1st Edition) (Schaum's Outlines Series)

Example text

2-1). Note that two or more different sample points might give the same value of X(0, but two different numbers in the range cannot be assigned to the same sample point. x (0 Fig. 1 R Random variable X as a function. v. X as (Fig. , say Y or 2, with Y(H)= 0, Y ( T )= 1 or Z ( H ) = 0, Z ( T ) = 0 B. v. and x is a fixed real number, we can define the event (X = x) as (X = x) = {l: X(C) = x) Similarly, for fixed numbers x, x,, and x, , we can define the following events: (X 5 x) = {l: X(l) I x) (X > x) = {C: X([) > x) (xl < X I x2) = {C: XI < X(C) l x2) CHAP.

19). From Eqs. 10),we have for any E 2 0. As F x ( x ) is continuous, the right-hand side of the above expression approaches 0 as Thus, P(X = x ) = 0. 19. v. X is given by 3 O

V. to denote the random variable. Note that the terminology used here is traditional. Clearly a random variable is not a variable at all in the usual sense, and it is a function. v. v. X. Thus the range of X is a certain subset of the set of all real numbers (Fig. 2-1). Note that two or more different sample points might give the same value of X(0, but two different numbers in the range cannot be assigned to the same sample point. x (0 Fig. 1 R Random variable X as a function. v. X as (Fig. , say Y or 2, with Y(H)= 0, Y ( T )= 1 or Z ( H ) = 0, Z ( T ) = 0 B.

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Schaum's Outline of Probability, Random Variables, and Random Processes (1st Edition) (Schaum's Outlines Series) by Hwei Hsu


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