Probability

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Question : 127 of 127

Marks: +1, -0

Find the Expected value of the following distribution

X	$-20$	$-10$	$30$	$75$	$80$
P(x)	$3/20$	$1/5$	$1/2$	$1/10$	$1/20$

$20.5$
$21.5$
$22.5$
$24.5$

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