QUESTION $5$

An arrow$-$based PERT schedule shows a sequence of activities related to the construction of a small building project. Information on durations of activities and values of means, standard deviations and variances are given in this table. Critical path is $1-3,3-5,5-8,8-10.$

$($Please fill in the blank$)$ The probability that this project will be

completed in $34$ weeks is $($please round to two decimal places$)$: $($

$\%$