Mathematics

11thgrade

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AP Statistics-Designing Studies

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10 questions

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  • 1. Multiple Choice
    5 minutes
    1 pt
    Can pleasant aromas help a student learn better? Two researchers believed that the presence of a floral scent could improve a person's learning ability in certain situations. They had 22 people work through a pencil-and-paper maze 6 times. Three of the times they wore a floral-scented mask and three times they wore an unscented mask. The three trials for each mask followed one another. Testers measures the length of time it took subjects to complete each of the six trials. They reported that, on average, subjects wearing the floral-scented mask completed the maze more quickly that those wearing the unscented mask, although, the difference was not statistically significant. This study is:
    a convenience sample
    an oberservational study
    an experiment, but not double-blind
    a double-blind experiment
  • 2. Multiple Choice
    5 minutes
    1 pt
    A television station is interested in predicting whether voters in its viewing area are in favor of federal funding for health care. It asks its viewers to phone in and indicate whether they support or are opposed to this. Of the 2241 viewers who phoned in, 1574 were opposed to federal funding for healthcare.
    Referring to the information above, the viewers who phoned in are
    a voluntary response sample
    a convenience sample
    a census
    a population
  • 3. Multiple Choice
    5 minutes
    1 pt
    A marketing research firm wished to determine if the adult men in Laramie, Wyoming, would be interested in a new upscale men's clothing store. From a list of all residential addresses in Laramie, the first selects a simple random sample of 100 and mails a brief questionnaire to each. The population of interest is
    all adult men in Laramie, WY
    all residential addresses in Laramie, WY
    the members of the marking firm conducting the survey
    the 100 addresses to which the survey was mailed
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