MANG6134 Risk Taking and Decision Making SEMESTER 2 EXAMINATIONS 2022-23
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MANG6134 W1
SEMESTER 2 EXAMINATIONS 2022-23
Risk Taking and Decision Making
SECTION A
You must answer at least ONE question from this section.
Question 1.
Home & Beyond Inc. is a chain of domestic merchandise retail stores of furniture and home goods. As of 2023, Home & Beyond operated approximately 500 stores across the nation. However, Home & Beyond experienced a negative cash flow of $200 million last year and the company is in danger of bankruptcy.
The newly appointed CEO, Rebekah, is tasked with the mission of saving the company from potential bankruptcy. She decides to use decision analysis to identify the most effective solutions to achieve this goal.
a) Using material from all areas studied in this module, give specific examples of what Rebekah might need to do at each stage of this analysis. (600 words maximum, 40 marks)
b) Explain in detail the advantages of the decision analysis approach. (400 words maximum, 40 marks)
c) Explain the potential problems of this approach. (400 words maximum, 30 marks)
Question 2.
The quality of the decisions made by a manager depends on both their evaluations of the probability of various events and their risk attitude. However, it is very likely that a decision maker will make mistakes when employing System 1 thinking. Referring to Prospect Theory and using diagrams where appropriate, answer the following questions:
a) Discuss what aspects of people’s risk-taking behavior are explained by the reflection effect. (300 words maximum, 30 marks)
b) Use Prospect Theory to explain why a decision maker is usually risk averse when facing a potential loss with a small probability (such as buying the insurance) but risk seeking when facing a potential gain with a small probability (such as gambling). (400 words maximum, 40 marks)
c) Develop numerical examples of decisions, such as those identified in part (b). Your examples should include appropriate value weighting functions and probability weighting functions so as to demonstrate how decisions such as those referred to in part (b) may or may not differ from those made using expected value. (300 words maximum, 30 marks)
Question 3.
Oriental Energy plc is a company engaged in electricity generation using wind power around the globe. The company is now trying to determine if a huge investment project is appropriate for the next 10 years. A key factor in this decision is whether a stable alternative energy technology will be available within 10 years.
Recently, scientists in the US have announced a breakthrough in nuclear fusion technology, which will eventually replace wind power. As a result, Oriental Energy needs to assess the probability of whether a commercialised nuclear fusion technology will appear in the next 10 years.
a) Discuss whether objective or subjective probabilities could be used in helping Oriental Energy select the most appropriate strategy. (300 words maximum, 30 marks)
b) Outline the stages in a structured methodology, employing multiple probability assessors, that Oriental Energy could employ to assess the probability of the emergence of commercialised nuclear fusion technology within 10 years. (600 words maximum, 40 marks)
c) When developing its strategy, Oriental Energy will also need to assess the probabilities of several rare events, such as structural failures in its wind turbines. Outline two approaches that can be employed to develop accurate probability assessments for rare events. (400 words maximum, 30 marks)
SECTION B
You must answer at least ONE question from this section.
Question 4.
A pharmaceutical company, Zastramod, (Z), are attempting to produce a ‘suitably effective covid vaccine’ (SECV) which will be more effective than existing vaccines. Z’s directors decide that there are three research strategies they can follow: a ‘traditional’(T), ‘modified’ (M) or ‘adventurous’ (A) strategy.
If T is chosen the researchers must then decide whether to use a ‘live- attenuated’ (L) or ‘inactivated’ (I) approach. If L is chosen, the researchers believe that there is a 0.2 chance that a SECV could be produced in 2 months and a 0.8 chance that it would take 12 months. If I is chosen, the researchers believe that there is a 0.5 chance that a SECV will be produced in 6 months and a 0.5 chance that it will take 15 months.
If research strategy M is selected, the directors must decide whether to use a ‘subunit’ (S) or ‘toxoid’ (X) approach. If the S approach is adopted their researchers estimate that there is an equal chance of a SECV being produced in 8 and 10 months. If the X approach is used then the directors must decide which of two laboratories to use (C or D). If C is used then researchers estimate that a SECV may take 8 or 12 months to produce, with probabilities 0.6 and 0.4, respectively. If D is used then researchers believe it could take 3 or 14 months to produce a SECV, but they do not feel able to estimate the related probabilities.
If research strategy A is selected, the directors of Zastramod believe that there is a 0.6 chance that a new data collection technique may be able to be employed. If this is the case, then the researchers believe that there is a 0.2 chance that a SECV could be produced in 2 months and a 0.8 chance that it will take 8 months. If the new data collection technique cannot be employed then the researchers believe that a SECV would be produced in 8 or 13 months with probabilities of 0.1 and 0.9, respectively.
a) Draw the decision tree which is needed to help the directors of Zastramod decide which research strategy it should adopt [NO CALCULATION REQUIRED]. (20 marks)
b) Write notes on the advantages of decision trees for this type of analysis. (180 words maximum, 15 marks)
c) If Zastramod’s aim is to minimise the expected time to produce a SECV, determine under what circumstances they would decide to select strategy D. (200 words maximum, 20 marks)
d) Taking account of costs, Zastramod now decide to adopt research strategy T, and to use the Markowitz risk return model to make their decision of whether to adopt approaches L or I. Determine how risk averse Zastramod’s directors must be for them to decide to adopt strategy I. (200 words maximum, 20 marks)
e) Discuss any limitations of the analyses conducted in (a), (c) and (d) and how these limitations might be overcome. (300 words maximum, 25 marks)
Question 5.
In planning ahead for COP26, the climate change conference, a group of 20 concerned nations, known as GreenKeen, are trying to decide on which one of two areas of concern they should focus their activities, increasing biodiversity (B) or reducing CO2 emissions (C), in the period prior to the conference.
Their aim is to improve the quality of life for their populations over that period (measured in quality-of-life units (QoLu), which range from 0 to 10) in order to provide clear evidence to COP26 of the positive impact of certain measures. GreenKeen collectively decide that the impact of their focussing on B on the quality-of-life of their populations will depend upon the degree to which the rest of the world reduce their use of fossil fuels (very low, low, medium or large degree of reduction) and the impact of GreenKeen focussing on C on the quality-of-life of their populations will depend upon the extent to which the rest of the world increase the amount of tree planting (very low, low, medium or large amount).
GreenKeen commission experts who estimate the probability with which the rest of the world will reduce their use of fossil fuels and the resulting quality- of-life improvements which will result to GreenKeen’s populations in the period prior to COP26, as follows:
GreenKeen Focus on Biodiversity
Degree to which rest of the world reduce their use of fossil fuels |
Probability |
QoLu improvement for GreenKeen’s populations |
Very low Low Medium Large |
0.1 0.3 0.4 0.2 |
2 3 4 8 |
GreenKeen commission a different set of experts who estimate the probability with which the rest of the world will increase their tree planting and the resulting quality-of-life improvements which will result to GreenKeen’s populations in the period prior to COP26, as follows:
GreenKeen focus on CO2 emissions
Extent to which rest of the world increase the amount of tree planting |
Probability |
QoLu improvement for GreenKeen’s populations |
Very low Low Medium Large |
0.3 0.2 0.2 0.3 |
0 2 6 10 |
a) Describe how GreenKeen might develop a group utility function to help them select B or C and discuss why this would be useful. (450 words maximum, 35 marks)
As a result of their deliberations, GreenKeen decide that the utility (U) function for this decision is given by:
U = (QO20(Lu))2 for 0 ≤ QoLu ≤ 2
U = for 2 ≤ QoLu ≤ 5
U = for 5 ≤ QoLu ≤ 7
For QoLu’s between 7M and 10M the utility function is less clearly defined, but U(8M) = 0.7, and U(10M) = 1.
b) Draw the utility curve for GreenKeen. (10 marks)
c) Determine GreenKeen’s attitude to risk for QoLus in the following categories: 0-2, 2-5, 5--7) and explain how you have made this judgement. (150 words maximum, 25 marks)
d) Determine on which of the two activities, Biodiversity or CO2 emissions, GreenKeen should focus and outline any factors they should consider before implementing this option. (150 words maximum, 30 marks)
Question 6.
Two companies, Heisenberg plc (H) and Schrödinger plc (S), are manufacturers of electric vehicle batteries in Kwantomstan. Since their batteries have almost the same performance, they are facing a price competition in Kwantomstan’s EV industry. In the middle of 2023, these two companies are trying to decide their pricing strategies for the coming year. The table below gives the estimated annual sales in million dollars for each combination of their price strategies.
S’s pricing strategy
S1 S2 S3
H1 (50, 50) (0, 99) (0, 96)
H2 (99, 0) (49.5, 49.5) (0, 96)
strategy
H3 (96, 0) (96, 0) (48, 48)
For example, if Heisenberg employs H1 and Schrödinger employs S2 then sales will be zero for H and 99 (million £ ) for S.
a) Determine the likely outcome of these price competition and explain how a more optimal outcome for both H and S might be achieved. (300 words maximum, 35 marks)
The management of Heisenberg plc (H) is also trying to renegotiate a package of pay, holiday and working hours with the workers union (U). The benefits that H will pay and the benefits that U will receive per year can be regarded as a zero-sum game and depend upon the strategies they both adopt as follows: (continued on next page)
H4 H5 H6
U1 8 10 35
U’s
U2 4 11 3
Strategy
U3 25 20 5
For example, if U employs U1 and H employs H4 then U will receive £8 million in benefits per year and H will pay £8 million per year in benefits.
b) Discuss why U1, H5 might appear to be a ‘solution’ to these negotiations and explain why it is unlikely to be achieved in practice. (250 words maximum, 25 marks)
c) Determine the optimal strategy for both H and U in these negotiations and the amount which H can expect to pay. Explain the method adopted at each stage of these calculations. (300 words maximum, 40 marks)
2023-08-22