Using the table below, sketch out an AON Network

using the average or mean time estimates for each

task, and calculate the critical path$($s$)$ using mean

task times.

Question $6$

Using the PERT method, calculate each task time

estimate, standard deviation, and variance. Enter

your answer as a number, rounded to $2$ decimals $(0\mathrm{.}50$

or $3\mathrm{.}67$ ; not $\mathrm{.}5$ or $3\mathrm{.}66$ or $3\mathrm{.}6667)$ This response format

requires trailing zeroes, meaning if your answer is $2\mathrm{.}2,$

enter it as $2\mathrm{.}20.$