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Find a 90 Percent Confidence Interval for the Difference Between

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Find a 90 percent confidence interval for the difference between the proportions of group 1 and group 2. Let p1 represent the population proportion of the people in group 1 who like a new mobile app, and let p2 represent the population proportion of the people in group 2 who like a new mobile app. Find a 90 percent confidence interval for the difference between the proportions of group 1 and group 2. Let p<sub>1</sub> represent the population proportion of the people in group 1 who like a new mobile app, and let p<sub>2</sub> represent the population proportion of the people in group 2 who like a new mobile app. = .21, = .13, n<sub>1</sub> = 300, and n<sub>2</sub> = 400. = .21, Find a 90 percent confidence interval for the difference between the proportions of group 1 and group 2. Let p<sub>1</sub> represent the population proportion of the people in group 1 who like a new mobile app, and let p<sub>2</sub> represent the population proportion of the people in group 2 who like a new mobile app. = .21, = .13, n<sub>1</sub> = 300, and n<sub>2</sub> = 400. = .13, n1 = 300, and n2 = 400.

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