In a study of exercise, a large group of male runners walk on a treadmill for 6 minutes. Their heart rates in beats per minute at the end vary from runner to runner according to the N(106, 12.9) distribution. The heart rates for male nonrunners after the same exercise have theN(131, 17) distribution.

(a) What percent (0.1) of the runners have heart rates above 135 (use software)?

%.

(b) What percent (0.1) of the nonrunners have heart rates above 135 (use software)?

%.