Histogram for answers for a 10-problem test 35 .30 .25 问题2 .20 .15 .10 图中纵坐标值是 .05 0 012345678910 怎台得出来的? Number of Right Answers 贝努利试验过程: P(exactly k successes)= (p1-p- 当k=8, 0.88.0.22≈0.302Histogram for answers for a 10-problem test 贝努利试验过程: 当k=8, 0.8 0.2 0.302 8 10 8 2