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Let us assume 100 students who were smoker participated in the study to quit smoking. A researcher asked them if there were planning g to quit smoking at time 1 and time2. The study involved several sessions of intervention to quit smoking The following table is the data in before and after the intervention done Quitting smoking Time 2 (After) Total No Yes Time 1 No 10 50 (Before] Yes 30 10 40 Total 40 50 100 Recall: NoNemar's test would be calculated as follow a] What is the chi square value? 1. 3.10 2 6.90 3. 260 4 5:00 bi Do you have enough evidence to decide that the proportion of quitting smoking changed over time? Let alpha= 05 1. Yes, Since chi square test is greater than chi square value from table the data indicate that we have enough ewdance to decide that the proportion of quitting smoking changed over time 2 No, Since chi square test is less than chi square value from table the data inc cate that we have not enough evidence to decide that the proportion of quiting smoking changed over time