试题与答案

An analyst does research about joint proba

题型:单项选择题

题目:

An analyst does research about joint probability and gathers the following information about a stock's dividend:

Event 1 Probability of a dividend change 0.8
Event 2 Probability of a dividend increase 0.5
The joint probability that both events will occur is closest to:()

A. 0.40

B. 0.50

C. 0.80

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B解析:参见图1-29。反冲洗排水堰口至水箱的1/2有效深度处的高度为:2.8m(即平均冲洗水头)则至水箱最高水位的高度为:2.8+1.8/2=3.7m因为辅助虹吸管上端管口和水箱最高水位的高差就是最大过滤水头损失...

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