In a hypothesis test in which the null hypothesis states that the difference between two population proportions is 0, that is, when $\pi$₁ = $\pi$₂, which of the following occurs? A)a common pooled value is calculated as a weighted average of the individual sample proportions B)a one-tailed hypothesis test is performed C) the t distribution is used D)the sampling distribution is positively skewed E)all of the above

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When the null hypothesis states that the difference between two population proportions is 0, a common pooled value is calculated as a weighted average of the individual sample proportions. This is part of the process for conducting a hypothesis test for two proportions to estimate the common proportion under the null hypothesis.

In a Hypothesis Test in Which the Null Hypothesis States π\piπ

In a Hypothesis Test in Which the Null Hypothesis States $\pi$