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Hello student.
00:03
Physician from denmark conducted a year long study of effectiveness of nicotine.
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Schwingham is helping people to stop smoking.
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The one three people all participated in study are smoker.
00:20
So 60 were given with 2mg of schwingham and 53 were given plaspoola with no nicola.
00:33
All were told to use the gum swing gum 23 smokers given nicotine chwing gum had remained non -smoker so here given that x1 is equal to 23 n1 is equal to 60 x2 is equal to 12 and n2 which is equal to 53 now to the data support claim nicotine gum can help to stop smoking so so here our null hypothesis is h0, p1 minus p2 is equal to 0.
01:13
And our alternative hypothesis is p1 minus p2 greater than 0.
01:23
So first we calculate p1 cap.
01:27
So here p1 cap is equal to 23 divided by 60, which is equal to 0 .38 and p2 cap, which is equal to 0 .38, is equal to well divided by 53 which is equal to 0 .22.
01:43
Now we know the test statistic for two sample proportion test.
01:50
So here z is equal to p1 cap minus p2 cap upon square root of p bar into 1 minus p bar into bracket 1 upon n 1.
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Plus 1 upon n2.
02:15
Now we put all the values in the given test statistic...