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Economics of Business 1: Contracts and Governance, ECON4007

2021

1.   Advice on the contents of the exam and technical support

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3.   Time adjustments for students with disabilities

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Lastly please ensure you upload files to the correct course Moodle assignment.

•   Submit (at least) one file per question. You may submit up to 20 files. Subquestions may be submitted in one file according to question.

•   Use the following naming convention: StudentID_CourseCode_QuestionNumber (e.g. 1234567_MGT1001_1). DO NOT include your name

•   This exam has been configured to allow submission of answers for two hours        beyond the scheduled exam time. Submissions made during this two-hour period will be treated as ‘late’ and will be graded H’ .

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The following information is very important – your degree may be at risk if you do not adhere to these instructions:

•   You must not communicate with any other person about these examination questions during the period in which you can submit your answers

•   You must follow any instructions on your examination paper regarding use of resources such as internet sources, books, notes or any other material that    would not normally be allowed in examinations on campus.

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•   You must not submit answers you have discussed with or copied from others, and you must not copy from notes you have prepared with or shared with      others.  If your answers are similar to those of any other candidate(s) you will both/all be suspected of collusion and referred to Student Conduct

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How to complete this exam:

•   Students should answer all parts of ONE question out of TWO.

•   Read the cover sheet carefully.

•   Read the exam student guidance on Moodle.

•   Please include your student ID, course code and the number of the question.

Question 1:

A)

Two inbivibusie )Dsii d9m I snb II( dsv9 toin才iy ind9Yi才9b 上 see9才e )Dsii d9m

A、a、D、snb (. Td9 u才iii才i9e sY9 3iv9n in d9 oiiowin3 sdi9. Td9y s3Y99b d9 oiiowin3  bivieion qYoD9buY9: 9sDd o含 d9m Ddooe9e on9 odt9D才 in uYn、wi才d d9 oiiowin3 oYb9Y: I → II → I → II. Hinb d9 eud3sm9-q9Y含9D才 9puiiidYium o含 d9 Y9eui才in3 3sm9.

 

A

a

D

I

S

t

II

S

t

[33%]

B)

An individual’s u才iii才y-o含-w9si才d unD才ion ie U(w) = ln(w + 1) snb d9iY DuYY9n才 w9si才d ie  e. Ae s unD才ion o含 几、rsnb e dow muDd o含 die w9si才d wiii d9 inbivibusi inv9e才 in s qYot9D才 ds才 yi9ibe 9Yo wi才d qYodsdiii才y 几snb wi才d qYodsdiii才y 1 − 几 qsye rC boiisYe o sn

inv9e才oY wdo dse eun为 C boiisYe in才o d9 qYot9D才S

[33%]

C)

Rosie’s utility-o含-w9si才d 含unD才ion ie U(w) = 1 − 1/(w + 1). H9Y DuYY9n才 w9si才d ie t次00、 du才 wi才d qYodsdiii才y 0.次 sn sDDib9n才 wiii Y9buD9 d9Y w9si才d o t次己、se eummsYi过9b dy      Tsdi9 d9iow.

e才s才9         节Yodsdiii才y W9si才d

Uo sDDib9n才 ADDib9n

0.Q

0.次

t次00

t次己

euqqoe9 ds才 s boiisY o含 ineuYsnD9 Dov9Ys39 Doe才e S0 D9n才e.

s. Ie Hoei9 Yie为-sv9Ye9S

b. If possible, find a different insurance price such that it is more favourable to Rosie, but the insurance firm still maintains positive profits (make Rosie a better offer than you competitor). Prove that Rosie will be better-off by comparing her utility in both cases. Compare the insurance firm’s profits as well.

c. What is the minimum insurance price that an insurance firm will be willing to offer? Will it change if Rosie has a different utility function?

[33%]

Question 2:

A)

Four individuals (call them 1,2, 3 and 4) have jointly inherited 2 assets (call them

A, and B). The utilities are given in the following table. Identify all Pareto efficient ways to distribute these assets amount them.

 

1

2

3

4

A

7

5

0

3

B

0

2

1

6

[33%]

B)

An individual’s utility-of-wealth function is U(w) = w and their current wealth is $1000.

With a probability of 0.25 there will be an accident reducing the individual’s wealth to $100. What is the maximum insurance price such that this individual still purchases full coverage?

[33%]

C)

Consider the following game. Jodi is the first player, choosing rows, and Ryan is the second player, choosing columns.

 

 

 

Jodi

T

B

 

Ryan

L     R

 

2,0

2,2

 

3, 3

0, 2

a. Find all the equilibria and all Pareto-efficient outcomes in one-shot game.

b. Assume that the game repeats infinitely many times. For what minimal value of discount factor there is an equilibrium such that (T, R) is played in every round?

c. Assume that the game repeats infinitely many times. Find an example of discount factor and equilibrium such that (T, R) is never played.

[33%]

Before you upload your exam answers:

Please ensure that you have added the course code (on the front of this exam paper), your student ID and the question number that you have attempted on your answer.