Solved

var(aX+bY)=\operatorname { var } ( a X + b Y ) =

Question 2

Multiple Choice

var(aX+bY) =\operatorname { var } ( a X + b Y ) =


A) a2σX2+b2σY2a ^ { 2 } \sigma _ { X } ^ { 2 } + b ^ { 2 } \sigma _ { Y } ^ { 2 }
B) a2σX2+2abσXY+b2σY2a ^ { 2 } \sigma _ { X } ^ { 2 } + 2 a b \sigma _ { X Y } + b ^ { 2 } \sigma _ { Y } ^ { 2 }
C) σXY+μXμY\sigma _ { X Y } + \mu _ { X } \mu _ { Y }
D) aσX2+bσY2a \sigma _ { X } ^ { 2 } + b \sigma _ { Y } ^ { 2 }

Correct Answer:

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