Suppose arrival times for a friend is ?~?(0, XXXXXXXXXXdecimal places) a. What is the probability your friend is between 7 and 9 minutes late? _______________________ b. What is the probability that...

Suppose arrival times for a friend is ?~?(0, 12). (4 decimal places)
a. What is the probability your friend is between 7 and 9 minutes late?
_______________________
b. What is the probability that your friend is less than 9 minutes late?
c. Find the 70th percentile.
d. Find the probability your friend is at least 6 minutes late.