Question
7. Suppose X and Y are independent random variables such that E(x)=0, E(y) = 1, V ar(x)=1, and V ar(y)=4. Find the following: a. E(7x
7. Suppose X and Y are independent random variables such that E(x)=0, E(y) = 1, V ar(x)=1, and V ar(y)=4.
Find the following:
a. E(7x + 2y 3)
b. E(x^2)
c. V ar(2x+5y=7)
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Cambridge IGCSE And O Level Additional Mathematics Coursebook
Authors: Sue Pemberton
2nd Edition
1108411665, 9781108411660
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