In A Study Of Exercise A Large Group Of Male Runners Walk On A Treadmill For 6 M

In a study of exercise, a large group of male runners walk on a treadmill for 6 minutes. Their heart rates beats per minute at the end vary from runner to runner according to the N(104,12.5) distribution. The heart rates for male non-runners after the same exercise have the N(130,17) distribution.

What percentage of the runners have heart rates above 135? what percent of the non-runners have heart rates above 135?

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