A1 a-d A1a A1b A1c A1d Trial Random # Materials Cost Per Unit Trial Random # Labor Cost Per Unit Trial Random # Utilities Cost Per Unit Total Cost Per Unit 1 74 $38.00 1 2 $22.00 1 5 $3.00 $63.00 2 57 $38.00 2 77 $28.00 2 42 $4.00 $70.00 3 67 $38.00 3 15 $22.00 3 65 $6.00 $66.00 4 41 $35.00 4 31 $24.00 4 75 $6.00 $65.00 5 28 $35.00 5 44 $24.00 5 65 $6.00 $65.00 6 75 $38.00 6 87 $28.00 6 95 $6.00 $72.00 7 35 $35.00 7 90 $28.00 7 48 $4.00 $67.00 8 79 $38.00 8 34 $24.00 8 13 $3.00 $65.00 9 10 $33.00 9 80 $28.00 9 67 $6.00 $67.00 10 95 $39.00 10 88 $28.00 10 10 $3.00 $70.00 11 39 $35.00 11 11 $22.00 11 99 $6.00 $63.00 12 27 $35.00 12 43 $24.00 12 97 $6.00 $65.00 Total $437.00 Total $302.00 Total $59.00 $798.00 Average $36.42 Average $25.17 Average $4.92 $66.50

A2. Materials Labor Utilities Cost Probability Cummulative Probability Cost Probability Cummulative Probability Cost Probability Cummulative Probability $33 0.20 0.00-0.20 $22.00 0.18 0.00-0.18 $3.00 0.16 0.00-0.16 $35 0.33 0.20-0.53 $23.00 0.08 0.18-0.26 $4.00 0.37 0.16-0.53 $38 0.37 0.53-0.90 $24.00 0.25 0.26-0.51 $6.00 0.47 0.53-1.00 $39 0.10 0.90-1.00 $25.00 0.19 0.51-0.70 $28.00 0.30 0.70-1.00 A2a. In order to use the random interval tables correctly, you must take the given probability and use this information to populate the cumulative probability as noted in A2. Because the probability is given for materials, labor and utilities we are able to