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Question 1 · 2 marks
Calculator allowed
X
X
X
takes values
1
,
2
,
4
1,2,4
1
,
2
,
4
with probabilities
0.6
,
0.3
,
0.1
0.6,0.3,0.1
0.6
,
0.3
,
0.1
,
respectively.
Find
E
(
3
X
2
−
2
)
E(3X^2-2)
E
(
3
X
2
−
2
)
.