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Researchers found 400 current smokers to volunteer for a study in which each was randomly assigned to one of three treatment groups. Group 1 received an electronic cigarette (e-cig) in which each cartridge contained 7.2 mg of nicotine, Group 2 received an e-cig that contained 5.4 mg of nicotine, and Group 3 received an e-cig that contained no nicotine. The subjects did not know which group they were assigned. During the course of the intervention, subjects dropped out of the study. At the end of the study 79 subjects remained in Group 1, 70 in Group 2, and 70 in Group 3. Results as to whether the subject quit smoking entirely are available below. Complete parts (a) through (9). Click here to view the results of the study. Click here to view the table of critical values of the chi-square distribution. Current smokers O e-Cig Smokers Former smokers OO Smokers in the study (d) State the null and alternative hypotheses. CA. Ho: P1 = P2 = P3 H: At least one of the proportions is different from the others. O B. Ho: Quitting and group are independent. H1: Quitting and group are dependent. O C. Ho: 01 = E, and O2 = E2 and O3 = E3 H1: 01 # E, or 02 * E2 or 03 * E3 OD. Ho: P1 = P2 = P3 H1: P1 # P2 # P3 (e) Does the evidence suggest e-cigs are effective in helping individuals abstain from cigarette smoking? Use a = 0.05. Compute the value of the chi-square test statistic. x8 =(Round to two decimal places as needed.)