Chris Urbaniak - University of Waterloo

Step 3: Establish the level of significance (0.05). Step 4: Calculate Z using the graphing calculator or Excel (see Lewis or Root). Z Test for the Difference in Two Proportions Data Hypothesized Difference 0 Level of Significance 0.05 Group 1 Number of Successes 104 Sample Size 11037 Group 2 Number of Successes 189 Sample Size 11034 Intermediate Calculations Group 1 Proportion 0.0094 Group 2 ... ................
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