As part of the program to reduce smoking, the Ministry of Health ran an advertising campaign...

 

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As part of the program to reduce smoking, the Ministry of Health ran an advertising campaign to convince people to quit smoking. To evaluate the effectiveness of their campaign, they had 12 subjects record the average number of cigarettes smoked per day in the week before and the week after exposure to te advertisement. The data were: Subject 1 2 3 4 5 Before 45 20 33 30 16 43 20 17 30 25 After 6 7 8 9 19 33 25 26 40 28 19 34 28 23 41 26 10 11 12 36 40 Test the effectiveness of the campaign by testing the appropriate hypothesisi at 0.05 level of significance. a) State the appropriate null and alternative hypothesis b) Calculate the t value c) Make your decision and conclusion d) Run the t-test analysis using the SPSS and compare the results with that of the above manual calculations. As part of the program to reduce smoking, the Ministry of Health ran an advertising campaign to convince people to quit smoking. To evaluate the effectiveness of their campaign, they had 12 subjects record the average number of cigarettes smoked per day in the week before and the week after exposure to te advertisement. The data were: Subject 1 2 3 4 5 Before 45 20 33 30 16 43 20 17 30 25 After 6 7 8 9 19 33 25 26 40 28 19 34 28 23 41 26 10 11 12 36 40 Test the effectiveness of the campaign by testing the appropriate hypothesisi at 0.05 level of significance. a) State the appropriate null and alternative hypothesis b) Calculate the t value c) Make your decision and conclusion d) Run the t-test analysis using the SPSS and compare the results with that of the above manual calculations.

Answer rating: 100% (QA)

To test the effectiveness of the campaign we can use a paired ttest since we are comparing the average number of cigarettes smoked per day before and ... View the full answer