If a null hypothesis about the population proportion p is rejected at the 0.10 level of significance, it must be rejected at the 0.05 level.

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Rejecting a null hypothesis at a higher level of significance (e.g., 0.10) does not guarantee it will be rejected at a lower level of significance (e.g., 0.05), because a lower significance level requires stronger evidence against the null hypothesis.

If a Null Hypothesis About the Population Proportion P Is