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    SAT官方每日一题附答案和解析[数学](2019年2月12日)

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    Mathematics

    A restaurant chain with 8 locations wants to introduce healthier options to its menu. In order to determine customer preferences, the chain will offer three new healthy options for a two-week period at all of it's locations and analyze the percent of total orders that include at least one of the new healthy options. Which of the following research designs is most likely to produce valid results?

    A.Recording how many customers ordered each of the new options at all of the restaurants over the two-week period
    B.Asking a random sample of customers at all of the restaurants which new item they might order in the future
    C.Recording how many customers ordered each of the new options at one of the restaurants over the two-week period
    D.Recording how many customers ordered each of the new options for breakfast at all of the restaurants over the two-week period

    重点单词   查看全部解释    
    random ['rændəm]

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    adj. 随机?#27169;?#38543;意?#27169;?#20219;意的
    adv. 随

     
    sample ['sæmpl]

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    n. 样品,样本
    vt. 采样,取样

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    determine [di'tə:min]

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    v. 决定,决?#27169;范ǎ?#27979;定

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    produce [prə'dju:s]

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    n. 产品,农作物
    vt. 生产,提出,引起,

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    recording [ri'kɔ:diŋ]

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    n. 录音 动词record?#21335;?#22312;分词

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    option ['ɔpʃən]

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    n. 选择权,可选物,优先购买权
    v. 给予选

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    representative [repri'zentətiv]

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    adj. 代表性?#27169;?#20195;议?#39057;模?#20856;型的
    n. 代

     
    appropriate [ə'prəupriət]

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    adj. ?#23454;鋇模?#30456;称的
    vt. 拨出(款项)

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    ?

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