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. = .21, = .13, n₁ = 300, and n₂ = 400.

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The Answer of 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. = .21, = .13, n₁ = 300, and n₂ = 400.

Find a 90 Percent Confidence Interval for the Difference Between