Find x2 , the chi square test statistic. 6) Tests for adverse reactions to a new drug yielded the results given in the table. Find x2 , to 6) measure the dependence of treatment (drug or placebo) on the reaction (whether or not headaches were experienced) Drug Placebo Headaches 11 No headaches 73 91 A) Test statistic: x2= 1.3867 B) Test statistic: x2= 1.6689 C) Test statistic: x2= 1.7982 D) Test statistic: X2- 1.5820 7) Responses to a survey question are broken down according to employment status and the sample 7) results are given below. Find x2, to measure the dependence of employment status (employed or unemployed) on the response (yes, no, or undecided). Yes No Undecided Employed 30 15 5 Unemployed 20 25 10 A) Test statistic: x2 = 5.753. B) Test statistic: x2 = 5.823. C) Test statistic: x2 = 5.633. D) Test statistic: x2 = 5.942. 8) A 5x3 contingency table has rows and columns. 8) A) 4, 6 B) 5, 3 C) 6, 4 D) 3, 5