ACTU PS5821 Actuarial Methods – Autumn 2024
Assignment – 4
Assigned 9/27/24, Due 10/5/24
Problem 1. A population consists of 30% smokers with µx = 0.2 and 70% non-smokers with µx = 0.1. Calculate the 75th percentile of a randomly selected individual’s future timelife random variable.
Problem 2. Calculate the complete expectation of life at age 40 if you are given the following. 40p0 = 0.6, E(T0 ) = 62 and E[min(T0 , t)] = t − 0.005t2 , 0 < t < 60.
Problem 3.
Consider a select-ultimate survival model with a 2-year select period, where
µ [37]+t = µ37+t − A, 0 ≤ t ≤ 2
Find the value of A if you are given the following.
˚(e)[37] = 58, ˚(e)37 = 57.5, ˚(e)[37]: 2 = 1.9, ˚(e)37: 2 = 1.7
Problem 4. The force of mortality for a life selected at age x is
µ [x]+t = (β + 0.006S + 0.003x)t, t > 0
where where S = 1 if (x) smokes and S = 0 otherwise. Also, 10p[3(n)0(o)n]smoker = 0.96
(a) Find the value of β
(b) Calculate the probability that a life randomly drawn from a population of lives selected at age
30 of which 40% are smokers, will survive at least 10 years.
Problem 5. T20 follows a uniform distribution with a limiting age of 120. Find n such that˚(e)20: ni = 48
Reviews
There are no reviews yet.