2012 AP Statistics統計學真題Practice Exam系列之選擇題免費下載

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2012 AP Statistics Practice Exam Multiple Choice Questions Free Download

2012 AP統計學模考選擇題部分免費下載

此套題共計1小時30分鐘，共40題

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部分真題預覽：

7）The weight of adult male grizzly bears living in the wild in the continental United States is approximately normally distributed with a mean of 500 pounds and a standard deviation of 50 pounds. The weight of adult female grizzly bears is approximately normally distributed with a mean of 300 pounds and a standard deviation of 40 pounds. Approximately, what would be the weight of a female grizzly bear with the same standardized score (z-score) as a male grizzly bear with a weight of 530 pounds?

1. 276 pounds
2. 324 pounds
3. 330 pounds
4. 340 pounds
5. 530 pounds

10) A compact disc (CD) manufacturer wanted to determine which of two different cover designs for a newly released CD will generate more sales. The manufacturer chose 70 stores to sell the CD. Thirty-five of these stores were randomly assigned to sell CDs with one of the cover designs and the other 35 were assigned to sell the CDs with the other cover design. The manufacturer recorded the number of CDs sold at each of the stores and found a significant difference between the mean number of CDs sold for the two cover designs. Which of
the following gives the conclusion that should be made based on the results and provides the best explanation for the conclusion?

1. It is not reasonable to conclude that the difference in sales was caused by the different cover designs because this was not an experiment.
2. It is not reasonable to conclude that the difference in sales was caused by the different cover designs because there was no control group for comparison.
3. It is not reasonable to conclude that the difference in sales was caused by the different cover designs because the 70 stores were not randomly chosen.
4. It is reasonable to conclude that the difference in sales was caused by the different cover designs because the cover designs were randomly assigned to stores.
5. It is reasonable to conclude that the difference in sales was caused by the different cover designs because the sample size was large.

12) In the design of a survey, which of the following best explains how to minimize response bias?

1. Increase the sample size.
2. Decrease the sample size.
3. Randomly select the sample.
4. Increase the number of questions in the survey.
5. Carefully word and field-test survey questions.

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