2. Age at death for (20) is uniformly distributed, with w= 110. You are given: (i) The valuation interest is = 4%. (ii) Z is the present value random variable for a 15-year endowment insurance which pays $1 at the end of year of death or at the end of 15 years, whichever comes first. Calculate the variance of Z. 2. Age at death for (20) is uniformly distributed, with w= 110. You are given: (i) The valuation interest is = 4%. (ii) Z is the present value random variable for a 15-year endowment insurance which pays $1 at the end of year of death or at the end of 15 years, whichever comes first. Calculate the variance of Z