新SAT官方Daily Practise每日一题数学推理题

小站教育2017-05-24 11:21:29

8937

问题相似？试试立即获取解答吧~

摘要：今天起，本系列将给大家带来SAT官方的每日一练真题，各个项目都有，持续更新，希望大家同步多练习。今天这里分享的是5月23日的数学推理题，一起来练习吧！

答案：D

解析：

Choice D is correct. Start by interpreting the resultsof each sample individually before comparing thetwo.

The January sample had a mean weight of 0.95ounces and a margin of error of 0.06 ounces. The February sample had a mean weight of 0.98ounces 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 samplewas less than the average weight of a snack-sized bag of potato chips in the February sampleand that the margin of error for the January sample was larger than the margin of error forthe 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 wasin February, the larger margin of error in January indicates that the January sample size wassmaller than the February sample size.

下载小站SAT APP，刷SAT真题