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Unformatted text preview: (11.88); recalculate the mean and variance. Notice that one large observation has a significant impact on the sample mean and variance. Extra Problem 2 : If you have two jointly distributed random variables, you can define the conditional expectation of one given the other has already attained a certain value. More specifically If the density for X and Y is given by Find E[YX=0.5]. Make sure that your problems are legible, well organized, justified, and finished....
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 Spring '09
 Bennett
 Statistics

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