6. Z is the present value random variable of a whole life insurance of b payable at the moment of death of an individual age x. You are given: (i) 8 = 0.05 (ii) Hx+c = 0.03, t20 Calculate bif b x (u + 8)-1 = Var(Z). 6. Z is the present value random variable of a whole life insurance of b payable at the moment of death of an individual age x. You are given: (i) 8 = 0.05 (ii) Hx+c = 0.03, t20 Calculate bif b x (u + 8)-1 = Var(Z)