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Let X be a random variable with probabilities as shown in Table 3.7. Table 3.7 Values of X and P(x) X(x,) 1 1 1 P(x,) 2 Find (a) E[X], (b) E[X²], (c) E[(2X +1)²] and (d) ơx.

Let X be a random variable with probabilities as shown in Table 3.7. Table 3.7 Values of X and P(x) X(x,) 1 1 1 P(x,) 2 Find (a) E[X], (b) E[X²], (c) E[(2X +1)²] and (d) ơx.

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 29E
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Let X be a random variable with probabilities as shown in Table 3.7. Table 3.7 Values of X and P(x) X(x;) -1 1 P(x,) 1 1 6. 3 2 Find (a) EĻX], (b) E[X²], (c) E[(2X+1)²] and (d) o,.
Transcribed Image Text:Let X be a random variable with probabilities as shown in Table 3.7. Table 3.7 Values of X and P(x) X(x;) -1 1 P(x,) 1 1 6. 3 2 Find (a) EĻX], (b) E[X²], (c) E[(2X+1)²] and (d) o,.
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