Jennifer Bellin has been put in charge of planning her company's annual leadership conference. The dates of the conference have been determined by her company's executive team. The accompanying table contains information about the activities, predecessors, and activity times $($in days$).$ Develop a spreadsheet model for finding the project completion time and critical path. Based on expected activity times, the critical path consists of activities $\_\_\_$ and has an expected duration of $\_\_$ days. Activity Predecessors Activity Time $($days$)$ A Develop conference theme $4$ B Determine attendees $4$ C Contract facility A $9$ D Choose entertainment A $12$ E Send announcement B $5$ F Order gifts B $8$ G Order materials B $4$ H Plan schedule of sessions C $40$ I Design printed materials B$,$ H $15$ J Schedule session rooms C $2$ K Print directions H $11$ L Develop travel memo E $8$ M Write gift letter F $8$ N Confirm catering H $3$ O Communicate with speakers H $3$ P Track RSVPs and assign roommates L $30$ Q Print materials I $3$ R Assign table numbers P $3$ S Compile packets of materials G $6$ T Submit audiovisual needs O $3$ U Put together welcome letter P $8$ V Confirm arrangements with hotel P $4$ W Print badges G$,$ P $6$