网站导航     在线客服  
sat新手资料大合集【打包下载】
学生选择在小站备考:30天 392869名,今日申请156人    备考咨询 >>

五月备考:今日份的SAT数学练习题(附答案和详解)

2018年03月29日09:00 来源:小站整理
参与(0) 阅读(562)

SAT/ACT备考资料免费领取

免费领取
摘要:本文为大家带来一道SAT数学练习题,五月份眼看着就很近了,备考的时间越来约紧张,大家都开始调整状态进入冲刺阶段了。平常的练习也千万不能掉以轻心,我们一起来做一道SAT数学练习题吧。

下面我们就一起来看看这道SAT数学练习题,测试一下吧。这道题的题目和答案都有点长,大家耐心做完哦。

五月备考:今日份的SAT数学练习题(附答案和详解)图1

Mathematics>Standard Multiple Choice

Read the following SAT test question and thenclick on a button to select your answer.

A potato chip company produces the same numberof snack-sized bags of potato chips every month. Amanager at the company randomly selects a sample of snack-sized bags of potato chips to beweighed in a routine quality-assurance check each month. The January sample had a meanweight of 0.95 ounces and a margin of error of 0.06 ounces. The February sample had a meanweight of 0.98 ounces and a margin of error of 0.04 ounces. Based on these findings, which ofthe following is an appropriate conclusion?

A.Most of the snack-sized bags of potato chips produced by the company in January each had aweight of at least 0.95 ounces, while most of the snack-sized bags of potato chips produced bythe 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 inJanuary 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 inJanuary 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 thenumber of snack-sized bags of potato chips in the February sample.

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 0.95 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 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.

以上就是小站为大家整理的SAT数学练习题,希望能够帮助到大家。小站会一直陪在大家身边,备考SAT的宝宝们加油哦~

特别申明:本文内容来源网络,版权归原作者所有,如有侵权请立即与我们联系contactus#zhan.com,我们将及时处理。

相关文章

2008-2017SAT历年真题解析 新SAT考试“战前军粮”储备 4大高分必备资料免费下载 考前实战全真模拟 SAT模考免费下载 2017年11月4日SAT北美考试分析 深度! SAT数学练习题 含详细答案解析(1) 【汇总贴】7月SAT数学官方Daily Practice ... SAT数学:3道真题来练练手(附答案和详解) 新SAT考前90条备考要点、条条能涨分!

专题推荐

未输入验证码
未输入验证码
未输入验证码
获取验证码
免费领取

你可能会喜欢

2018年SAT考试流程详解
2018年SAT考试流程详解
SAT

100% 的用户喜欢

最新SAT考试考场详细介绍
最新SAT考试考场详细介绍
SAT

100% 的用户喜欢

美国高考SAT和ACT之不同
美国高考SAT和ACT之不同
SAT

100% 的用户喜欢

2018年SAT考试分数解读
2018年SAT考试分数解读
SAT

100% 的用户喜欢

18年5月5日SAT考试回忆
18年5月5日SAT考试回忆
SAT

100% 的用户喜欢