If $x$ and $y$ are random variables having expected values as $4.5$ and $2.5$ respectively, then the expected value of $(x - y)$ is

2

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7

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Solution

The correct option is C $2$
Given the values of $x$ $ξ$ $y .$
$\Rightarrow x = 4.5$ $ξ$ $y = 2.5$
$∴$ Expected value of $(x - y) = (4.5 - 2.5) = 2.$
Hence, the answer is $2.$

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If x and y are random variables having expected values as 4.5 and 2.5 respectively, then the expected value of (x−y) is

The correct option is C 2Given the values of x ξ y.⇒x=4.5 ξ y=2.5∴ Expected value of (x−y)=(4.5−2.5)=2.Hence, the answer is 2.

If $x$ and $y$ are random variables having expected values as $4.5$ and $2.5$ respectively, then the expected value of $(x - y)$ is

The correct option is C $2$
Given the values of $x$ $ξ$ $y .$
$\Rightarrow x = 4.5$ $ξ$ $y = 2.5$
$∴$ Expected value of $(x - y) = (4.5 - 2.5) = 2.$
Hence, the answer is $2.$