新SAT官方Daily Practise每日一题数学推理题
- 2017年05月24日11:21 来源：小站教育作者：小站SAT编辑
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Read the following SAT test question and then click on a button to select your answer.
A potato chip company produces the same number of snack-sized bags of potato chips every month. A manager at the company randomly selects a sample of snack-sized bags of potato chips to be weighed in a routine quality-assurance check each month. The January sample had a mean weight of 0.95 ounces and a margin of error of 0.06 ounces. The February sample had a mean weight of 0.98 ounces and a margin of error of 0.04 ounces. Based on these findings, which of the following is an appropriate conclusion?
A.Most of the snack-sized bags of potato chips produced by the company in January each had a weight of at least 0.95 ounces, while most of the snack-sized bags of potato chips produced by the company in February each had a weight of at least 0.98 ounces.
B.The mean weight of all the snack-sized bags of potato chips produced by the company in January must have been 0.03 ounces more than the mean weight of all the snack-sized bags ofpotato chips produced by the company in February.
C.The mean weight of all the snack-sized bags of potato chips produced by the company in January was 0.03 ounces less than the mean weight of all the snack-sized bags of potato chipsproduced by the company in February.
D.The number of snack-sized bags of potato chips in the January sample was less than the number of snack-sized bags of potato chips in the February sample.
重点单词：
check [tʃek] n. 检查，支票，账单，制止，阻止物，检验标准
appropriate [ə'prəupriət] adj. 适当的，相称的
sample ['sæmpl] n. 样品，样本
insight ['insait] n. 洞察力
conclusion [kən'klu:ʒən] n. 结论
population [.pɔpju'leiʃən] n. 人口 ，(全体)居民，人数
routine [ru:'ti:n] n. 例行公事，常规，无聊
margin ['mɑ:dʒin] n. 差额，利润，页边空白，边缘
multiple ['mʌltipl] adj. 许多，多种多样的
randomly ['rændəmli] adv. 任意地，随便地，胡乱地
（答案及解析请翻页查看哦~）
