Question: Find the 99% confidence interval for the difference in the population proportions for the data of a study in which 80% of the 150 Republicans

Find the 99% confidence interval for the difference in the population proportions for the data of a study in which 80% of the 150 Republicans surveyed favored the bill for a salary increase and 60% of the 200 Democrats surveyed favored the bill for a salary increase.

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