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Stats-How is the pooled proportion related to the 2 sample proportions? What distribution is used for...

Stats-How is the pooled proportion related to the 2 sample proportions?

What distribution is used for the hypothesis test of 2 population proportions?

There are 2 statements made about a confidence interval involving the difference between 2 population proportions. Explain the significance of zero if it lies within the bounds of the confidence interval for the difference of 2 population proportions? Does this mean there appears to be a difference between population proportions? Or, does this imply there does not appear to be a difference between population proportions?

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