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Mathematics

9th -

12thgrade

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Margin of Error

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15 questions

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  • 1. Multiple Choice
    15 minutes
    1 pt

    For a class project, a student in a statistics class surveys the monthly rent for 32 unfurnished one-bedroom apartments in Boston and finds the mean monthly rent to be $1400 with a standard deviation of $220.

    Find the margin of error for the sample mean. (assuming 95% confidence) Round to the nearest hundredth

    $77.78

    $4.31

    $188.78

    $494.97

  • 2. Multiple Choice
    15 minutes
    1 pt

    For a class project, a student in a statistics class surveys the monthly rent for 32 unfurnished one-bedroom apartments in Boston and finds the mean monthly rent to be $1400 with a standard deviation of $220.

    Find the 95% confidence interval for the population mean Round to the nearest hundredth

    [1322.22, 1477.78]

    [1395.69, 1404.31]

    [1211.22, 1588.78]

    [905.03, 1894.97]

  • 3. Multiple Choice
    15 minutes
    1 pt

    A random sample of 45 life insurance policy holders showed that the average premiums paid on their life insurance policies was $340 per year with a standard deviation of $62. Construct a 95% confidence interval for the population mean. Round to the nearest hundredth

    [321.52, 358.48]

    [238.63, 441.37]

    [253.64, 426.36]

    [328.57, 351.43]

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