if varx 4 find var 3x8 where x is a random


If Var(x) = 4, find Var (3x+8), where X is a random variable.


Var (ax+b) = a2 Var x

Var (3x+8) = 32 Var x = 36 

 

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Mathematics: if varx 4 find var 3x8 where x is a random
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