π(π₯)={πΆ(4π₯βπ₯^2) , 0β€π₯β€3 0 , otherwise where πΆβπ is some constant. C = 1/9 E[X] = 1.75 Find E[x^2] (the second order moment of π) = ?? Find var[π], the variance of the random variable π = ??
var[X] = E[x^2] - (E[x])^2 = 5/9 - (1.75)^2 = 0.84375
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