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13 January, 08:37

For a hypothesis test of H0: p = 0.35 against the alternative Ha: p > 0.35, the z test statistic is found to be 2.45. What can be said about this finding?

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  1. 13 January, 09:47
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    From this finding, it can be said that the sample proportion is greater than the population proportion because the test statistic (z = 2.45) is positive.

    Step-by-step explanation:

    H0: p = 0.35

    Ha: p > 0.35

    The test is a one-tailed test because the alternate hypothesis is expressed using greater than.

    The test statistic (z) for a proportion is given as (p' - p) : sqrt [p (1-p) / n]

    p' is sample proportion

    p is population proportion

    n is sample size

    For the test statistic z to be positive, p' must be greater than p.
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