90% confidence interval results: Difference Count1 Total1 Count2 Total2 Sample Diff. Std. Err. L. Limit U. Limit P1 - P2 153 180 117 180 0.2 0.044409709 (a) (0.1270, 0.2730) (b) (0.1130,0.2870) (c) (0.1105, 0.2895) (d) (0.1249,0.2751)

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A: