Mathematics

12th

grade

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AP Stats Chapter 8 Practice

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22 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    What is the acronym we use to help remember the steps for calculating and interpreting a confidence interval?

    ALARM

    BLIZZARD

    PANIC

    SNOWDAY

  • 2. Multiple Choice
    2 minutes
    1 pt

    2000 children were surveyed and the report that followed said, "With 98% confidence, between 20% and 50% of all parents make their children eat breakfast." What does 98% confidence mean in this situation?

    We can be 98% confident that the method used to get the intervals always gives the correct answer

    98% of all parents will make their kids eat breakfast

    When used repeatedly, the method used to find the interval produces intervals which include the true proportion about 98% of the time

    The kids were 98% confident that they ate breakfast that day.

  • 3. Multiple Choice
    5 minutes
    1 pt

    Mr. Reinecke wants to estimate the proportion of seniors who will go to college next year with 96% confidence and a margin of error of no more than 5%. What size sample does he need to take?

    422

    419

    410

    400

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