WORKSHEET NO. 6 UNIT 2: STATISTICAL INFERENCE Sub-Unit 2: T-Test for Two Independent Sample 1. Given the following information, test the stated hypothesis. 1 2 : 0 oH The population means are the same 1 2 : 0 aH The population means are different Sample 1 Sample 2 1 20n 2 22n 1 115X 2 112.3X 2 1 22.7S 2 2 20.7S Use a 10% level of significance, and assume that the values are normally distributed. 2. The researcher wants to know if there is a significant difference between Method 1 and Method 2. Based on the data gathered, Test the hypothesis at a 1% significance level.