Find the probability of randomly selecting an undergraduate who studies more than 20 hours per week.

In Exercises 35–38, the bar graph shows the results of a survey in which 8806 undergraduate students were asked how many hours they spend on studying and other academic activities outside of class in a typical week.

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Number responding 2500 Weekly Study Time of Undergraduates 2452 2000 1654 1500 1000 500 0-5 6-10 1810 1309 11-15 867- 714 16-20 21-25 25+ Time (in hours)