Suppose a particular project has an expected completion time of 30 days; in other words, the critical path takes 30 days to finish. Further, the variance of the critical path is 25. Based on this information, please answer the following questions:
Find the probability that the project:
1. Would be completed within 40 days
2. Would take longer than 40 days to finish
3. Would be completed within 20 days
4. Would take longer than 20 days to finish