2008 AP Statistics统计学真题Practice Exam系列之选择题免费下载

历年AP Statistics统计学系列

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2008 AP Statistics Practice Exam Multiple Choice Questions Free Download

2008 AP统计学模考选择题部分免费下载

此套题共计1小时30分钟，共40题

占总分50%

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可以使用图形计算器

考试时会提供常用公式表

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部分真题预览：

6）The buyer for an electronics store wants to estimate the proportion of defective wireless game controllers in a shipment of 5000 controllers from the store's primary supplier. The shipment consists of 200 boxes each containing 25 controllers. The buyer numbers the boxes from 1 to 200 and randomly selected six numbers in that range. She then opens the six boxes with the corresponding numbers, examines all 25 controllers in each of these boxes, and determines the proportion of the 150 controllers that are defective. What type of sample is this?

1. Biased random sample
2. Nonrandom sample
3. Simple random sample
4. Stratified random sample
5. Cluster random sample

8) Sophomore, junior, and senior students at a high school will be surveyed regarding a potential increase in the extracurricular student activities fee. There are three possible responses to be the survey question - agree with the increase, do not agree with the increase, or no opinion. A chi-square test will be conducted to determine whether the response to this question is independent of the class in which the student is a member. How many degrees of freedom should the chi-square test have?

1. 9
2. 6
3. 4
4. 2
5. 1

12) An environmental scientist wants to test the null hypothesis that an antipollution device for cars is not effective. Under which of the following conditions would a Type I error be committed?

1. The scientist concludes that the antipollution device is effective when it actually is not
2. The scientist concludes that the antipollution device is not effective when it actually is
3. The scientist concludes that the antipollution device is effective when it actually is
4. The scientist concludes that the antipollution device is not effective when it actually is not
5. A Type I error cannot be committed in this situation

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