X~Exp(x,θ) prove or disprove that E[x^2]=2 (θ)^2. I know the pdf and how to find E[x^2] but not sure how to show it equals (θ)^2.
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Originally Posted by nikie1o2 X~Exp(x,θ) prove or disprove that E[x^2]=2 (θ)^2 NOOOO!!!! I think you were trying to write 2 (θ)^-2. I know the pdf and how to find E[x^2] but not sure how to show it equals (θ)^2. For an exponential distribution, integrate by parts..
Ah Ha! well i was asked to prove or disprove this so i presume the claim is false then ! I'll have to do an counter example
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