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[AP Statistics] 4.1a Sampling

Last updated 5 months ago

14 questions

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Based on this data, where would you put extra armor on the planes?

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Identify the population and the sample in each of the following settings.

(a) An assembly line at a factory produces about 500 cars a day. Each day, quality control managers inspect 25 cars at the factory and perform an in-depth review of each car.

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(b) A politician uses a Twitter poll to find out whether his followers agree with a recent bill that was passed and 432 people respond to the poll.

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How much sleep do high school students get on a typical school night? A counselor designed a survey to find out. To make data collection easier, the counselor surveyed the first 100 students to arrive at school on a particular morning. These students reported an average of 7.2 hours of sleep on the previous night.

Is 7.2 hours probably greater than or less than the true average amount of sleep last night for all students at the school? Why?

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Many websites include customer reviews of products, restaurants, hotels, and so on. The manager of a hotel was upset to see that 26% of reviewers on a travel website gave the hotel “1 star”—the lowest possible rating.

Do you think the real percentage of 1 star experiences is less than or more than 26%?

Stop here... for now

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Click on "Show your work" below to view the random number table. Once you are done using the table, type in your answer below.

Most of the following are questions from your book (Page 262). You can check your answers to odd questions in the back

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Use the "Show your work" feature to show your work, then type in the 5 students you chose

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Are there any problems above that you would like to go over in class? Indicate the question numbers below (Numbers refer to the Formative question number). I'll try to cover anything that is highly requested.