a$)$ The expected completion time of the project $=48\mathrm{.}99$ days $($round your response to two decimal places$).$

The activities that represent the project's critical path are $A-C-E-H-I-K-M-N.$

b$)$ If the time to complete the activities on the critical path is normally distributed, then the probability that the critical path $54$ your response to two decimal places