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2018年SAT考试数学备考练习题(4)

2018-03-18 16:56:00来源:网络

  新东方在线SAT频道为大家带来2018年SAT考试数学备考练习题,希望对大家SAT备考有所帮助。更多精彩尽请关注新东方在线SAT频道!

  Read the following SAT test question and then click on a button to select your answer.

\

  The table above gives the results of a survey about whether or not participants brought a laptop on their most recent vacation. If one of the participants is selected at random, what is the probability that the participant is female, given that the participant brought a laptop on vacation? (Round your answer to the nearest hundredth.)

  A..21

  B..32

  C..40

  D..65

  【答案解析】

  答案:D

  解析:

  Choice D is correct. In the sample, the total number of participants who brought laptops on vacation was 324. It is given that the participant brought a laptop on vacation. Therefore the probability that the participant was female given that the participant brought a laptop on vacation is the probability of selecting a female from the group of participants who brought laptops. This can be calculated as 212/324≈.65. Therefore the probability of selecting a female given that a participant brought a laptop on vacation is approximately .65.

  以上就是新东方在线SAT频道为你带来的2018年SAT考试数学备考练习题,更多精彩敬请关注新东方在线SAT频道。

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本文关键字: SAT备考数学 SAT数学 2018SAT

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