Suppose, in testing a hypothesis about a proportion, the Z test statistic is computed to be 2.04. The null hypothesis should be rejected if the chosen level of significance is 0.01 and a two-tail test is used.

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The critical Z value for a two-tailed test at a 0.01 significance level is approximately ±2.576. Since 2.04 is less than 2.576, the null hypothesis should not be rejected.

Suppose, in Testing a Hypothesis About a Proportion, the Z