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    Hypothesis Test

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    A legal researcher is studying the age distribution of juries by comparing them with the overall age distribution of available jurors. The researcher claims that the jury distribution is different from the overall distribution; that is, there is a noticeable age bias in jury selection in this area.The table shows the number of jurors at a county court in one year and the percent of persons
    residing in that county, by age. Use the population distribution to find the expected juror frequencies.Test the researcher's claim at a = 0.01.

    21-29 30-39 40-49 50-59 60 and above
    Jury 45 128 244 359 359
    Population 20.5% 21.7% 18.1% 17.3% 22.4%

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    Solution Preview

    Null Hypothesis, H0: There is no bias in the jury selection
    Alternate Hypothesis, Ha: There is bias in the jury ...