Use a x2 test to test the claim that in the given contingency table, the row variable and the column variable are independent. Tests for adverse reactions to a new drug yielded the results given in the table. At the 0.05 signicance level, test the claim that the treatment (drug or placebo) is independent ofthe reaction [whether or not headaches were experienced). Dmg Placebo Headaches I 1 I? No 123113de 73 91 The p value for this test is O 0.05 O 3.841 O 1.793 O 0.180 Use a x2 test to test the claim that in the given contingency table, the row variable and the column variable are independent. Tests for adverse reactions to a new drug yielded the results given in the table. At the 0.05 signicance level, test the claim that the treatment [drug or placebo) is independent ofthe reaction (whether or not headaches were experienced). Dxu Placebo Headaches 1 1 ".7 No headaches 3'3 91 The conclusion for this test is . 0 Fall to reject null hypothesis. Treatment and reaction are independent. 0 Reject null hypothesis. Treatment and reaction are associated. 0 Fall to reject null hypothesis. Treatment and reaction are associated. O Reject null hypothesis. Treatment and reaction are independent