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Identify and describe these heuristics and identify and explain a bias to which each of these heuristics lead.

Assessment item 3 
Assignment 3 
Value: 20% 
Due date: 20-Sep-2016 
Task 
QUESTION 1 Decision Analysis 

Show all calculations to support your answers. You may follow the methods shown in the mp4 on Decision Analysis for a way to do part (b) of this question if you wish. 

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20 marks – 10 for (a), 10 for (b). 

a) People frequently use three heuristics to assess probabilities and to predict values. Identify and describe these heuristics and identify and explain a bias to which each of these heuristics lead. 

b) Martha Jones is considering investing money in three alternative investments over a one-year period. Below are the expected profits from each investment given assumptions about the state of the economy: 

Decision Alternative Good Economy Poor Economy 
Stock market $200,000 -$60,000 
Bonds $80,000 $45,000 
Term deposit $45,000 $35,000 

i) If Martha is an optimist which investment should she choose? 
ii) If Martha is a pessimist which investment should she choose? 
iii) Following the criterion of regret which investment should she choose? 
iv) If Martha believes that there is a 65% chance of a good economy which investment should she choose? 
v) What is the expected value of perfect information about the state of the economy? 

QUESTION 2 Value of information 

Show all calculations to support your answers. You may follow the methods shown in the mp4 on 
Value of info for a way to answer this question if you wish. 

20 marks – 4 for (a), 8 for (b), 2 for (c), 6 for (d) 

A manufacturer is trying to choose between two production methods (a1 and a2) for a new product. He considers that the probability of demand for the new product being good (s1) is 0.3 and the probability that demand will be poor (s2) is 0.7. 

In evaluating the two production methods the manufacturer has calculated the following table of conditional profits: 

s1 s2 
a1 30,000 16,000 
a2 10,000 24,000 

a) Which production method should be used? Show calculations. 

The manufacturer asks a marketing consult for an opinion as to whether demand will be good or poor. From previous experience when the consultant has indicated that demand will be good she has been right 80% of the time, and when she has indicated that demand will be poor she has been right 65% of the time. Cost of information charged by the consultant is $3500. 

b) Revise the prior probabilities in light of the consultant’s track record. 
c) What is the posterior probability of good demand given that the consultant has indicated demand will be good? 
d) What is the expected net gain or loss from engaging the consultant? Should the consultant be engaged? Explain the reasoning for your answer. 

QUESTION 3 Simulation 

This is a work integrated assessment item. The tasks are similar to what would be carried out in the workplace. 

10 marks 

A general practice has a nurse to attend patients with wounds and who need vaccinations.wages of the nurse is $12.50. From an analysis of one week’s operation of the nursing service the following data were derived: 

Time between arrivals Number of occasions 
10 10 
15 20 
20 25 
25 30 
30 15 

Service time (minutes) Number of occasions 
10 40 
15 20 
20 20 
30 10 
40 10 

Using Excel set up a simulation model to simulate about 2 hours (120 minutes) from time zero, and determine whether one nurse is sufficient or whether a second nurse is needed in the practice. 

Show the data and the model in two printouts: (1) the results, and (2) the formulas. Both printouts 
must show row and column numbers and be copied from Excel into Word. 
QUESTION 4 Regression Analysis and Cost Estimation 

20 marks – 4 for (a), 12 for (b), 4 for (c). 
Quick Copy has recorded the following Maintenance Costs and two possible cost drivers over the last year. 

Month Number of photocopies Hours of maintenance service Maintenance costs 
January 80,000 525 4,710 
February 68,000 505 4,310 
March 69,000 310 2,990 
April 64,000 495 4,200 
May 90,000 315 3,000 
June 85,000 485 4,215 
July 55,000 315 2,950 
August 85,000 405 3,680 
September 62,000 475 4,100 
October 82,000 345 3,250 
November 60,000 350 3,260 
December 70,000 335 3,015 

a) Using the High-Low method of cost estimation and Number of Photocopies as the cost driver, what would be the resulting cost equation for Maintenance Costs? 

b) Using Excel, perform three regression analyses to regress Maintenance Costs against Number of Photocopies, then against number of Hours of Maintenance Service, then against both of them simultaneously. Paste your results into Word. State the cost equation from each. Prepare a report to management including an analysis and comment on the results of each regression with a reasoned recommendation of the best cost driver to use in the future. 

c) If the simple regression using Number of Photocopies were adopted, what would be the predicted overhead in a month when there were 85,000 photocopies and 500 hours of maintenance service? 

QUESTION 5 CVP Analysis 

20 marks – 4 for (a), 4 for (b), 4 for (c), 8 for (d). 

A smart phone manufacturer makes two types of smart phones, Connect32 and Connect64. He has sales staff who sell the phones on commission. The following data are available: 

Product Sales Price Variable Production Cost Sales Commission 
Connect32 $600 $100 $20 
Connect64 $850 $375 $35 

Fixed costs per annum are $120,000. 

a) Calculate the unit contribution margin for each product. 
b) This year the manufacturer will specialise in making only Connect32 phones. How many does he need to sell to break even? 
c) If Connect32 phones are still the only product what is the breakeven sales volume for the year in sales dollars? 
d) He now decides to manufacture both phones this year in the ratio of 3 Connect64 to 1 Connect32. 
i. How many of each phone must be sold to earn a profit of $195,000 before tax for the year? 
ii. How many of each phone must be sold to earn a profit of $140,000 after tax (of 30c in the dollar) for the year? 

Marking criteria 
Assessment Item 3 
The criteria described below will not apply to all parts of all questions but describe the standards expected where the question requirements are appropriate. It is expected that all students will complete their own work with no collusion with other students. 
Criteria High Distinction Distinction Credit Pass 
Apply decision analysis to business situations Completely correct application of rational decision making techniques to business problems including ability to evaluate further information prior to decisions Mostly correct application of rational decision making techniques to business problems including the correct evaluation of further information prior to decisions Some difficulty in correctly applying rational decision making techniques to business problems including somewhat correct evaluation of further information prior to decisions Weakness in applying rational decision making techniques to business problems and difficulty in evaluating further information prior to decisions 
Use simulation in complex decisions Completely correct use of Excel to simulate decision situations involving probabilistic states of nature Mostly correct use of Excel to simulate decision situations involving probabilistic states of nature Few errors in use of Excel to simulate decision situations involving probabilistic states of nature Some weakness in use of Excel to simulate decision situations involving probabilistic states of nature 
Hypothesis testing in regression analysis Completely correct application of t-tests to determine significance of independent variables Mostly correct application of t-tests to determine significance of independent variables Some difficulty in correctly applying t-tests to determine significance of independent variables Weakness exhibited in understanding the application of t-tests to determine significance of independent variables 
Apply CVP analysis to product mix decisions Correct use of CVP analysis to single and multi-product firms Mostly correct use of CVP analysis to single and multi-product firms Correct use of CVP analysis to single product firms but some difficulty with multi-product firms Mostly correct use of CVP analysis to single product firms but less confident with multi-product firms 

Requirements 
This assignment must be submitted through Turnitin.

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