The weekly amount of time Nasa Engineers devote to their jobs is normally distributed with a mean of 56 hours and a standard deviation of 4 hours.

1. Find the probability that if three engineers were randomly selected all three individually worked for more than 59 hours per week. (Round the final answer to four decimal places.)

2. Find the probability that the mean amount of work per week for three randomly selected engineers is more than 59 hours per week.

( Round the final answer to four decimal places. )