Consider the office renovation project data in the following table. A "zero"

time estimate means that the activity could take a very small amount of time

and should be treated as a numeric zero in the analysis.

Click the icon to view the table.

a$.$ Based on the critical path, find the probability of completing the office

renovation project by $38$ days. Refer to the standard normal table. $($Make

sure to round all intermediate calculations for $t_e$ and variance to two

decimal places.$)$

The probability is $.($Enter your response rounded to four decimal places.$)$

b$.$ Find the date by which you would be $85$ percent sure of completing the

project. Refer to the standard normal table.

One is $85$ percent sure the project will be complete in

days. $($Enter your

response rounded up to the next whole number.$)$