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    Statistics: Calculating the test statistic z

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    Hi, I need assistance finding the value of the test statistic z using the below model:

    z = p - p / square root pq/n

    Question: The claim is that more than 75% of adults always wear a seat belt in the front seat. A Harris poll of 1012 adults resulted in 870 who say that they always wear a seat belt in the front seat.

    © BrainMass Inc. brainmass.com June 4, 2020, 3:13 am ad1c9bdddf
    https://brainmass.com/statistics/hypothesis-testing/calculating-test-statistic-z-503878

    Solution Summary

    This solution provides assistance in finding the value of the test statistic Z.

    $2.19

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