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答案：C
解析：
Choice C is correct. A sample survey is a study that obtains data from a subset of a population, usually through a questionnaire or interview, in order to estimate population attributes.
Since the margin of error is the same for each sample, the only reasonable conclusion based on the data from the observational study is that there is evidence (although not a guarantee) that people in New England check the weather more often than people do on the West Coast.
| 重點單詞 | 查看全部解釋 | |||
| conclusion | [kən'klu:ʒən] |
想一想再看 n. 結論 |
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| evidence | ['evidəns] |
想一想再看 n. 根據，證據 |
聯想記憶 | |
| interview | ['intəvju:] |
想一想再看 n. 接見，會見，面試，面談 |
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| survey | [sə:'vei] |
想一想再看 v. 調查，檢查，測量，勘定，縱覽，環視 |
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| margin | ['mɑ:dʒin] |
想一想再看 n. 差額，利潤，頁邊空白，邊緣 |
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| guarantee | [.gærən'ti:] |
想一想再看 n. 保證，保證書，擔保，擔保人，抵押品 |
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| reasonable | ['ri:znəbl] |
想一想再看 adj. 合理的，適度的，通情達理的 |
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| sample | ['sæmpl] |
想一想再看 n. 樣品，樣本 |
聯想記憶 | |
| random | ['rændəm] |
想一想再看 adj. 隨機的，隨意的，任意的 |
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| check | [tʃek] |
想一想再看 n. 檢查，支票，賬單，制止，阻止物，檢驗標準，方格圖案 |
聯想記憶 |
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