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| rev | Admin | (Created page with "'''Answer: E''' Let <math>X_{i}</math> be the present value of a life annuity of <math>1 / 12</math> per month on life <math>i</math> for <math>i=1,2, \ldots, 200</math>. Let <math>S=\sum_{i=1}^{200} X_{i}</math> be the present value of all the annuity payments. <math>E\left[X_{i}\right]=\ddot{a}_{62}^{(12)}=\frac{1-A_{62}^{(12)}}{d^{(12)}}=\frac{1-0.4075}{0.05813}=10.19267</math> <math>\operatorname{Var}\left(X_{i}\right)=\frac{{ }^{2} A_{62}^{(12)}-\left(A_{62}^{(1...") | Jan 19'24 at 20:09 | +957 |