Optical Disk Preinstallation Project

$18.$ The optical disk project team has started gathering the information necessary to develop the project network$-$predecessor activities and activity times in weeks. The results of their meeting are found in the following table.

$\backslash$table$[[$Activity$,$Description,Duration,Predecessor$],[1,$Define scope,$6,$None$],[2,$Define customer problems,$3,1],[3,$Define data records and relationships,$5,1],[4,$Mass storage requirements,$5,2,3],[5,$Consultant needs analysis,$10,2,3],[6,$Prepare installation network,$3,4,5],[7,$Estimate costs and budget,$2,4,5],[8,$Design section "point" system,$1,4,5],[9,$Write request proposal,$5,4,5],[10,$Compile vendor list,$3,4,5],[11,$Prepare mgmt$.$ control system,$5,6,7],[12,$Prepare comparison report,$5,9,10],[13,$Compare system "philosophies",$3,8,12],[14,$Compare total installation,$2,8,12],[15,$Compare cost of support,$3,8,12],[16,$Compare customer satisfaction level,$10,8,12],[17,$Assign philosophies points,$1,13],[18,$Assign installation cost,$1,14],[19,$Assign support cost,$1,15],[20,$Assign customer satisfaction points,$1,16],[21,$Select best system,$1,11,17,18,19,20$