为了同学们能够更好的复习SAT考试并加强习题锻炼，澳际留学小编每天会给大家整理一到SAT官网每日一题。今天，给小主们准备的是SAT数学真题，话不多说，赶紧看看吧。希望每天的坚持可以对同学们有所帮助。

　　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 of potato 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 chips produced 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.

　　答案：D

　　解析：

　　Choice D is correct. Start by interpreting the results of each sample individually bore comparing the two.

　　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.

　　This means that the average weight of a snack-sized bag of potato chips in the January sample was less than the average weight of a snack-sized bag of potato chips in the February sample and that the margin of error for the January sample was larger than the margin of error for the February sample.

　　The weight of the samples does not mean that the entire populations had the same attributes, but the margin of error does give some insight about the sample sizes.

　　Since the population of all snack-sized bags of potato chips was the same in January as it was in February, the larger margin of error in January indicates that the January sample size was smaller than the February sample size.

　　以上就是澳际留学小编今天给大家整理的2016年8月sat真题每日一练之数学真题，与大家共享，大家好才是真的好嘛。澳际留学小编希望每天坚持提供一道试题可以帮助同学们顺利通过考试。出国留学，澳际教育一直在!

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　　澳际六步曲第二步考试指导具体服务项目如下：

　　1. 免费测评模考，分析申请人的问题，制作考试测评报告和备考指导

　　2. 结合申请人的申请目标和考试基础，制定考试整体规划及时间安排

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　　4. 根据需要提供免费口语模拟和指导服务

　　5. 免费修改作文4篇

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　　(注：口语模拟和作文修改服务提供时间为每年2月28日-8月1日)

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