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SAT官方每日一题附答案和解析[数学](2019年8月23日)

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Mathematics>Standard Multiple Choice

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

A biologist conducts a study regarding an invasive species, the Gupta fly, in the city of Porto Alegre, Brazil. The flies were sampled from three different parks in 2001 and 2002.

Frequency of Sampled Gupta Flies in Porto Alegre by Year

Frequency of Sampled Gupta Flies in Porto Alegre by Year

Based on the information in the table, as a percentage, approximately what is the probability that one of the sampled Gupta flies in 2001 was found in either the Botanical Garden or Farroupilha Park?

A.33%
B.50%
C.67%
D.77%

重点单词   查看全部解释    
multiple ['mʌltipl]

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adj. 许多,多种多样的
n. 倍数,并联

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frequency ['fri:kwənsi]

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n. 频繁,频率

 
invasive [in'veisiv]

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adj. 侵略性的;攻击性的

 
probability [.prɔbə'biliti]

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n. 可能性,或然率,机率

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approximately [ə'prɔksimitli]

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adv. 近似地,大约

 
calculate ['kælkjuleit]

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v. 计算,估计,核算,计划,认为

 
species ['spi:ʃiz]

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n. (单复同)物种,种类

 


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