Three recent college graduates have formed a partnership and have opened an advertising firm Their first project consists of activities listed in the following table Use Table 8. TIHE IN DAYS Imediate Predecessor Most Likely Activity A B C D 6 8 Optimistic 5 8 6 9 5 Pessimistid 7 11 11 15 9 7 2 F G H I End 8 12 6 6 3 4 7 D F 3 H 10,1 Chck here for the Excel Data File o. What is the probability that the project can be completed in 24 days orteszin 21 days or less (Round your and values to 2 decimal places and Standard deviation to 3 decimal places. Round your final answers to 4 decimal places) B D 8 A F G H 5 2. 4 9 F B D 6 3 4 7 E 7 7 5 10 11 5 1 End 8 H EGI 12 13 14 Part 15 16 Activity 17 18 19 First Crash $8 $10 $9 $7 $8 $7 $6 E F G H Second Crash $10 $11 $10 $9 $9 $8 $8 20 21 22 23 25 26 + 27 17-7 . Type here to search o i E esc ? * a Click here for the Excel Data File 0. What is the probability that the project can be completed in 24 days or less? In 21 days or less? (Round your teand z values to 2 decimal places and "Standard deviation" to 3 decimal places. Round your final answers to 4 decimal places.) Days 24 days or less 21 days or less Probability 0.9699 0.356 b. Suppose it is now the end of the seventh day and that activities A and B have been completed while activity D is 50 percent completed. Time estimates for the completion of activity D are 5, 6, and 7 Activities C and Hare ready to begin Determine the probability of finishing the project by day 24 and the probability of finishing by day 21. (Round your intermediate calculations to 3 decimal places and final answers to 4 decimal places.) Day 24 Day 21 Probability 0.8531 0.0516 c. The partners have decided that shortening the project by two days would be beneficial, as long as it doesn't cost more than $20,000. They have estimated the daily crashing costs for each activity in thousands, as shown in the following table Which activities should be crashed? Activity Second Crash $10 $11 D E F G H First Crash $8 $10 $9 $7 $8 $7 $6 $10 $9 $9 $0 $8 Activity C Activity G Second Crash First Crash