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For what values of R is the moment E(Z) finite, if Z has Question 3. ( 8 Marks in total, 4 marks per part). For

For what values of R is the moment E(Z) finite, if Z has

Question 3. ( 8 Marks in total, 4 marks per part). For what values of B E R is the moment E (Z3) nite, if Z has 6'2 z > 0 (i) density function f (z) = ' _ and (ii) mass function f (z) = 0, otherwise. 0, otherwise. 2(21+1),Z=1,2

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