Challenge $5$: Project Management:

Total Points: $25$ Pleaee solve as as possibe i asked it two times

Given the following information about staging a community play on Independence Day: Note: The standard normal value $(z)$ corresponding to $0\mathrm{.}8$ probability $=0\mathrm{.}84$

$\backslash$table$[[$Activity$,$Predecessor,Time $($days$)],[a,m,b$