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    Inferences about Two Population Variances

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    Media Matrix and Jupiter Communications gathered data on the time adults and the time teens spend online during a month (USA Today, September 14, 2000). The study concluded that on average, adults spend more time online than teens. Assume that a follow-up study sampled 26 adults and 30 teens. The standard deviations of the time online during a month were 94 minutes and 58 minutes, respectively. Do the sample results support the conclusion that adults have a greater variance in online time than teens? Use a=.01. What is the p-value?

    © BrainMass Inc. brainmass.com December 24, 2021, 7:28 pm ad1c9bdddf
    https://brainmass.com/statistics/hypothesis-testing/inferences-population-variances-191861

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    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    © BrainMass Inc. brainmass.com December 24, 2021, 7:28 pm ad1c9bdddf>
    https://brainmass.com/statistics/hypothesis-testing/inferences-population-variances-191861

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