(b) Consider the function defined by F(x) = 01 Section 4.2 15.) Consider the random variable X with density f(x) = (1/6)x 20 f(x) = (1/10)e /10 ent generating function, mỵ (t).

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Chapter6: Topics In Analytic Geometry
Section6.4: Hyperbolas
Problem 5ECP: Repeat Example 5 when microphone A receives the sound 4 seconds before microphone B.
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(b) Consider the function defined by
F(x) =
0<x< 1/2
(1/2)x
1/2<x<1
x>1
Section 4.2
15.) Consider the random variable X with density
f(x) = (1/6)x
2<x<4
(a) Find E[X].
(b) Find E[X2].
(c) Find o² and o.
16. Let X denote the amount in pounds of polyurethane cushioning found in a car.
(See Exercise 4.) The density for X is given by
1 1
f(x)
25 < x< 50
In 2 x
Find the mean, variance, and standard deviation for X.
17. Let X denote the length in minutes of a long-distance telephone conversation.
The density for X is given by
x>0
f(x) = (1/10)e /10
ent generating function, mỵ (t).
Transcribed Image Text:(b) Consider the function defined by F(x) = 0<x< 1/2 (1/2)x 1/2<x<1 x>1 Section 4.2 15.) Consider the random variable X with density f(x) = (1/6)x 2<x<4 (a) Find E[X]. (b) Find E[X2]. (c) Find o² and o. 16. Let X denote the amount in pounds of polyurethane cushioning found in a car. (See Exercise 4.) The density for X is given by 1 1 f(x) 25 < x< 50 In 2 x Find the mean, variance, and standard deviation for X. 17. Let X denote the length in minutes of a long-distance telephone conversation. The density for X is given by x>0 f(x) = (1/10)e /10 ent generating function, mỵ (t).
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