Calculate the z value that can be used to test the difference between the two populations. Sample 1: Mean = 10.6, s = 1.5, n = 150 Sample 2: Mean = 11.7, s =2.5, n =300; confidence level = 95% QUESTION 2 Calculate the z value (T.S) using the information given below. Sample 1: Percent = 40%, n=600 Sample 2: Percent = 50%, n=500; confidence level = 99%

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