00:01
Hi, i'm david and i'm here to help you and change your question.
00:04
Now let me pick up your question here.
00:06
Oh sorry, i put it in the center.
00:10
In the question here, we want to test the 9 -partis testing window sigma square equal to the 3 .28.
00:17
Then we have the known hypothesis, sigma square equal to the 2 .3 .28 versus the alternator 9 -partices sigma square will not equal to the 3 .28.
00:29
In the question here, we're given the n equal to the 10, the s equal to the 2 .1, and n4 equal to the 0 .05.
00:41
In the question i asked you to find the variance on the sample of the 10 students.
00:45
So we have to find the sigma on the x bar, the variance on the sample, and it will equal to the sigma of the school to n.
00:55
And we get equal to the 6 and there will mean the s oh so this will be down the range of the symbols it will be the s square and the s square will be the 2 .1 square and we will get equal to the 4 .41 and that will be the answer for the a for the b want to find the test statistics the test statistics equal to the k square the formula will be the n -1 times the n -square over the sigma square...