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Elementary,Middle School,High School,College,University,PHD
| Teaching Since: | May 2017 |
| Last Sign in: | 408 Weeks Ago |
| Questions Answered: | 66690 |
| Tutorials Posted: | 66688 |
MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
2.66Â Â Â The hospitalization period, in days, for patients following treatment for a certain type of kidney disor- der is a random variable Y = X + 4, where X has the density function
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2.61Â Â Â Assume that two random variables (X, Y ) are uniformly distributed on a circle with radius a. Then the joint probability density function is
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f (x) =
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(x+4)3 ,  x > 0,
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0,          elsewhere.
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f (x, y) =
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     1               2
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Ï€a2
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+ y2
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≤ a ,
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Find the average number of days that a person is hos- pitalized following treatment for this disorder.
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0,      otherwise.
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Find μX , the expected value of X.
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2.62Â Â Â Find the proportion X of individuals who can be expected to respond to a certain mail-order solicitation if X has the density function
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2.67Â Â Â Suppose that X and Y have the following joint probability function:
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f (x) =
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( 2(x+2)
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5       ,   0 <> 1,
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0,          elsewhere.
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(a)Â Â
Find the expected value of g(X, Y ) = XY 2.
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(b)  Find μX and μY .
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