Question 1061989
a. 32% are in both tails so 16% will be in the top tail (slightly less but no big deal).
b. 45 minutes or fewer is 3 sd to the left.  That is 0.3%.  You get that by subtracting the mean from the value they gave you and dividing by the sd.  That gives you the number of sd s. They are minus (to the left) or plus (to the right). The curve is symmetrical.
c. 135 minutes (2h15m) is 45 minutes the other direction and the same answer, 0.3%
d. 68% were within 1 sd, so that is between 75 and 105 minutes.
e.99.7% were within 3 sd s of the mean so between 45 and 135 minutes.