2011 AP Statistics统计学真题系列之简答题免费下载

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2011 AP Statistics Free-Response Questions Free Download

2011 AP统计学简答题部分免费下载

此套题共计1小时30分钟，共6题

占总分50%

每道大题可能含有不同数量的小题

其中Part A建议用时1小时05分钟，共5题，占Section II总分75%

Part B建议用时25分钟，共1题，占Section II总分25%

可以使用图形计算器

考试时会提供常用公式表

完整版下载链接见文末

部分真题预览：

Part A： 1）A professional sports team evaluates potential players for a certain position based on two main characteristics, speed and strength.

1. Speed is measured by the time required to run a distance of 40 yards, with smaller times indicating more desirable (faster) speeds. From previous speed data for all players in this position, the times to run 40 yards have a mean of 4.60 seconds and a standard deviation of 0.15 seconds, with a minimum time of 4.40 seconds, as shown in the table below. Based on the relationship between the mean, standard deviation, and minimum time, is it reasonable to believe that the distribution of 40-yard running times is approximately normal? Explain.
2. Strength is measured by the amount of weight lifted, with more weight indicating more desirable (greater) strength. From previous strength data for all players in this position, the amount of weight lifted has a mean of 310 pounds and a standard deviation of 25 pounds, as shown in the table below. Calculate and interpret the z-score for a player in this position who can lift a weight of 370 pounds.
3. The characteristics of speed and strength are considered to be of equal importance to the team in selecting a player for the position. Based on the information about the means and standard deviations of the speed and strength data for all players and the measurements listed in the table below for Players A and B, which player should the team select if the team can only select one of the two players? Justify your answer.

Part B： 6) Every year, each student in a nationally representative sample is given tests in various subjects. Recently, a random sample of 9,600 twelfth-grade students from the United States were administered a multiple-choice United States history exam. One of the multiple-choice questions is below. (The correct answer is C.)

In 1935 and 1936 the Supreme Court declared that important parts of the New Deal were unconstitutional. President Roosevelt responded by threatening to (A) impeach several Supreme Court justices (B) eliminate the Supreme Court (C) appoint additional Supreme Court justices who shared his views (D) override the Supreme Court's decisions by gaining three-fourths majorities in both houses of Congress

Of the 9,600 students, 28 percent answered the multiple-choice question correctly.

1. Let p be the proportion of all United States twelfth-grade students who would answer the question correctly. Construct and interpret a 99 percent confidence interval for p.
   Assume that students who actually know the correct answer have a 100 percent chance of answering the question correctly, and students who do not know the correct answer to the question guess completely at random from among the four options.
   Let k represent the proportion of all United States twelfth-grade students who actually know the correct answer to the question.

 

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2011 AP Statistics (Form B) Free-Response Questions Free Download

2011 AP统计学（Form B）简答题部分免费下载

此套题仅Section II含有简答题

共计1小时30分钟，共6题

占总分50%

每道大题可能含有不同数量的小题

其中Part A建议用时1小时05分钟，共5题，占Section II总分75%

Part B建议用时25分钟，共1题，占Section II总分25%

可以使用图形计算器

考试时会提供常用公式表

下载方式请访问下方链接

2011 AP Statistics (Form B) FRQ真题

 

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