answer all that are wrong pls

Problem 17-12 (Static) A project manager has compiled a list of major activities that will be required to install a computer Information system in her firm. The list includes estimated completion times for activities and precedence relationships Use Table B1 and Table 82 Immediate Predecessor Activity D 2 ANTONIO Estimated Times (veeki 2-4-6 6-8-10 7-9-12 2-35 3-4-9 5-7-9 2-2-) 2-3-6 3-4-5 4-5-8 5-8-12 1-1-1 6-7-11 8-9-13 1 N O End M N HO, KO Click here for the Excel Data File A Determine the mean and standard deviation for each of the followinn nathe in the project (Round Mean and Standard deviation in Click here for the Excel Data File a. Determine the mean and standard deviation for each of the following paths in the project. (Round Mean and Standard Deviation to 2 decimal places.) Answer is complete but not entirely correct. Path Mean Std. Dev. a-dah 24.33 1.35 3-f-9 15.50 1.14 D-I-J-k 14.83 1.01 c-m-n-o 26.17 1.66 b. If the project finishes within 26 weeks of its start, the project manager receives a $1,000 bonus. What is the probability of a $1,000 bonus? (Round 2.value to 2 decimal places, and probability to 4 decimal places.) Answer is complete but not entirely correct. Probability (51,000) 0.4602 c. If the project finishes within 27 weeks of its start the project manager receives a $500 bonus. What is the probability of a $500 bonus? (Round z-value to 2 decimal places, and probability to 4 decimal places.) Answer is complete but not entirely correct. Probability ($500) 692300 HA Nov