Please help with letter d. Looking for Z-Score table answer

Using PERT, Adam Munson was able to dotermine that the expected project complotion time for the construction of a piedsure yacht is 24 months, and the propect variance is 16. a) The probabitty that the project will be completed in 8 months =0 (round your response to tour docimar places) b) The probabilly that the project will be completed in 23 months = (rockid your response to four decimal places) c) The probabilty that the project will be compleled in 28 months = (round your rosponse to four decimal placesi). d) The peobabaly that the propect will be completed in 40 months = (rotand your response fo four docimal places)