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    Tests of Samples with Equal Variance

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    A new drug is being tested to see if it reduces the number of migraine headaches. Assuming equal variances, at alpha = .025, do these samples of number of monthly migraines from eight volunteers who are taking the drug and eight who are not show a significant reduction in the mean number of monthly migraine headaches? (See Science News 165, no. 9 [February 28, 2004].) Migraine1

    Topiramate: 3 3 2 4 3 4 3 5
    Control: 3 3 5 5 7 5 5 4

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    A new drug is being tested to see if it reduces the number of migraine headaches. Assuming equal variances, at α = .025, do these samples of number of monthly migraines from eight volunteers who are taking the drug and eight who are not show a significant reduction in the mean number of monthly migraine ...

    Solution Summary

    This solution provides a hypothesis test with a sample of equal variance.

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