1.) state appropriate procedure for data: the two sample t test of the matched p
ID: 3236047 • Letter: 1
Question
1.) state appropriate procedure for data: the two sample t test of the matched pairs t test. Why? 2.) based on question of interest, what is null an alternative hypothesis. A drug used to promote smoking cessation is given to a test group of smokers. Upon being selected for the drug trial, participants are asked the average number of cigarettes they are smoking per day. After six- weeks of taking the smoking cessation drug, the average number of cigarettes they are smoking per day is again recorded The following are results from an analysis on the data Participant Average number of Before 6 week drug trial 23 19 22 19 14 40 16 15 8 14 15 cigarettes per day After 6 week drug trial 19 14 21 13 6 35 16 2 0 7 16 The researchers would like to know if there is evidence the smoking cessation drug reduced the average number of cigarettes smoked per day. Use a significance level of 0.05Explanation / Answer
1) The test here is being done on the same persons before and after and hence the data is collected from same population(i.e. before and after persons are same).HencewWe will use the two sample t test of the matched pairs t test.Hence we will find the difference first between the smokers before the trial and after the trial and then perform the two sample t test of the matched pairs t test.
procedure -
1)state the nul hypothesis
2)Find the difference first between the smokers before the trial and after the trial
3)Find TSV(Test Statistical Valur) using the difference found in part 2)
4)perform T test and find the CV(Critical Value)
5)Compare TSV with CV and conclude results
2) Ho : d= D
Ha : d D
where d = x1 - x2
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