5
A.1.a. Average materials cost per unit
  
Cost 
Probability 
Average Cost 
Material 

$33.00 
0.02 
$0.66 

$35.00 
0.13 
$4.55 

$38.00 
0.25 
$9.50 

$39.00 
0.6 
$23.40 

Average Material Cost/Unit 
  
  
$38.11 
Labour 

$22.00 
0.02 
$0.44 

$23.00 
0.23 
$5.29 

$24.00 
0.02 
$0.48 

$25.00 
0.56 
$14.00 

$28.00 
0.17 
$4.76 

Average Labour Cost/Unit 
  
  
$24.97 
Utilities 

$3.00 
0.29 
$0.87 

$4.00 
0.59 
$2.36 

$6.00 
0.12 
$0.72 

Average Utility Cost/Unit 
  
  
$3.95 
Total Cost/Unit 
$67.03     
Average cost/Unit = Summation of (cost of that unit xprobability) while Total Cost/Unit = Average materialcost/Unit + Average Labour Cost/Unit + Average Utility Cost/Unit
Hence,
A.1.a. Average material cost per unit = $38.11A.1.b.Average labour cost per unit = $24.97A.1.c. Averageutility cost per unit = $3.95A.1.d. Total average costper unit = $67.03
A.2. Random Interval Tables
The random intervals tables below were generated using the belowformula so as to generate random numbers that were used in simulationtemplate.

In order to generate the cost of materials using the random numbers used in populating the column of the material cost per unit, a table similar to the one below was created.

Cumulative probability is easily populated through continuous summation of the probability values. Then, the random number intervals is determined from cumulative probability.

A class interval in created where the current cumulative probability becomes the lower class boundary for the class interval that is following

The determination of material cost per unit involves taking the random number that corresponds to simulation that is currently being run. For instance, for the first trial, a random number is take, say 76. Check from the class intervals, this number lies between 21 and 99. Thereafter, the corresponding cost to that class interval is $39.

This is repeated for all the trials in simulation. This populates the columns with the appropriate random interval table.
Materials
Cost 
Probability 
Cumulative probability 
Random Number Interval 
$33.00 
0.02 
0.02 
0101 
$35.00 
0.13 
0.15 
0214 
$38.00 
0.25 
0.4 
1539 
$39.00 
0.6 
1 
4099 
Labour
Cost 
Probability 
Cumulative probability 
Random Number Interval 
$22.00 
0.02 
0.02 
0101 
$23.00 
0.23 
0.25 
0224 
$24.00 
0.02 
0.27 
2526 
$25.00 
0.56 
0.83 
2782 
$28.00 
0.17 
1 
8399 
Utility
Cost 
Probability 
Cumulative probability 
Random Number Interval 
$3.00 
0.29 
0.29 
028 
$4.00 
0.59 
0.88 
2987 
$6.00 
0.12 
1 
8899 
B.1. Selling price per unit = Averagetotal cost per unit + Markup price
=$67.03 + $20
=$87.03
Reference
Group DecisionMaking: Fuzzy Models (2010). Fuzzy MulticriteriaDecisionMaking Models, Methods and Applications, 26391.