MINISTRY OF EDUCATION AND TRAINING
NATIONAL UNIVERSITY OF ECONOMICS
FACULTY OF MATHEMATICS FOR ECONOMICS
——————————————————
ACTUARIAL MATHEMATICS 1
ASSIGNMENT
Release Date: 9AM Thursday 14/4/2022
Due Date: 6PM Wednesday 4/5/2022.
Instructions:
Please read and follow these instructions closely.
• This is a group assignment. You are not allowed to share your work (report,
computer codes, spreadsheets, etc.) with people outside your group.
• Each group will submit a report which contains all the results, methodologies,
calculations. The first page of the report should be the cover page which includes
the names and details of all group members.
• The report must be typed-written. Exception can be made for mathematical
formulae which can be written neatly by hand and inserted in the report.
• The report together with all other supporting files will be submitted in a single
zipped folder.
• Computer codes and spreadsheets should be clearly annotated. You will be marked
on the clarity of your codes as well as the quality of your report.
• Please report to me if there are group members who are not doing their fair share
of work. Members of the same group do not necessarily get the same marks.
• Deadline should be strictly adhered to. Late submissions will be penalized at 10%
per day.
• This assignment consists of three problems.
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For problems 1 and 2, you must explain clearly in the report how your tables are
constructed. That means
• You must state clearly any formula that you used.
• If any formula that you used is not in lectures then you must prove it.
Problem 1 [3]
Construct the life tables for male and female separately based on the CSO-1980 table.
Each table should consist of the following columns:
• Age x,
• `
x
, use `
0
= 100, 000,
• d
x
, q
x
,
• e
x
,
• µ
x
use constant force of mortality (CFM) assumption.
Problem 2 [3]
Construct the annuity life tables for male and female separately again based on the
CSO-1980 table. Each table should consist of the following columns
• Age x,
• q
x
,
• ¨
a
x
,
• A
x
,
•
2
A
x
,
• (IA)
x
.
You should make interest rate i changeable by the users of your spreadsheets.
—————–TURN OVER—————–
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Problem 3 [4]
Consider a 10-year term insurance on a man aged 50, death benefit $100,000 payable
at the end of the month of death. Interest rate is assumed to be constant at 6% per
annum. Mortality follows the CSO-1980 table.
a) Calculate the expected present value (EPV) of the death benefit using the uniform
distribution of deaths (UDD) assumption.
b) This insurance policy is paid for by a monthly annuity as long as it is still in
force. Determine the monthly premium payment under the equivalence principle.
You should use the Woolhouse 3-term approximation formula to calculate the
EPV of premiums.
c) Calculate the probability that the insurance company makes a profit on this
policy if it uses the premium from part b).
d) Suppose the insurance company would like to be approximately 95% sure that
it makes a profit on this policy. Calculate the new monthly premium using the
CFM assumption.
e) Comment on the answer found in part d).
—————–END OF ASSIGNMENT—————–
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