00:01
Hi, i'm david and i'm here to help you answer your question.
00:03
Now let me bring up your question here.
00:06
In this question here, we are going to discuss about the hypothesis testing.
00:10
Here we have the claim that the mean of the cigarette contains almost 40 milligrams on nicotine.
00:20
And when you test this claim here, so therefore we have the known hypothesis, that the mean it will equal to 40 versus the alternative hypothesis.
00:29
Then the mean will be greater than the 40.
00:34
And in this question here, we're given the n equal to the 15, and we're given the x -par equal to the 42 .6, and we're given the s equal to the 3 .7.
00:46
The question asks let you find the test statistics.
00:49
It is denoted by the t, and the formula will be the x -par minus the mule over s, the 1 of 2nd, so we have the 42 .6 minus the 40, over the 3 .7 divided by square root of 15.
01:03
So if we compute it, we have the 2 .6 divided by 3 .7 times square root 15...