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    Hypothesis Testing - z score

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    Past data indicates an 80% (0.8) success rate in treating a certain medical problem. A new treatment is used on 100 patients in a clinical trial. It is successful in 87% (0.87) of the cases. What is the value of the z-score that can be used to test the null hypothesis that the success rate is 80%?

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    https://brainmass.com/statistics/z-test/hypothesis-testing-score-121707

    Solution Preview

    Response:
    Step 1: Identify the problem parameters
    population mean probability of success, p = 0.8
    sample mean ...

    Solution Summary

    The solution shows the value of the z-score that can be used to test the null hypothesis that the success rate is 80%.

    $2.19

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