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[Issue Essay]

试题详情

题目:

Analytical!

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答案:

提问:

On his drive to work, Leo listens to one of three radio stations, A, B, or C. He first turns to A. If A is playing a song he likes, he listens to it; if not, he turns to B. If B is playing a song he likes, he listens to it; if not, he turns to C. If C is playing a song he likes, he listens to it; if not, he turns off the radio. For each station, the probability is 0.30 that at any given moment the station is playing a song Leo likes. On his drive to work, what is the probability that Leo will hear a song he likes? 这个题目的0.3为什末代指在A station 播放到了自己喜欢的?不太理解0.3到底指的是甚麽

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解答: 徐小梅老师

提问:

都没读懂这题在说啥...不知道怎么列公式!

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解答: ken@boost.org.cn老师

提问:

没思路...只知道avg mean大于median 说明更多的房子销售价格是大于median的中位数的...位于median之后的数值的和要大于median之前数值的和...?

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解答: ken@boost.org.cn老师

提问:

请帮助求解!

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解答: ken@boost.org.cn老师

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