00:01
In this question here they given that the sample size n is equal to 13 and the mean x bar is equal to summation x.
00:13
So sigma x divided by n.
00:15
So which is equal to so the sigma x value from the given information 14 ,598 divided by small n means 13.
00:25
So which is equal to so 1 ,122 .92 .92.
00:33
This is the mean x -ball value.
00:36
Similarly, standard deviation here.
00:44
So standard deviation, yes, is equal to square root of, so sigma x square minus sigma x, whole square divided by n, and whole square, whole divided by n minus 1.
01:02
So which is equal to square root of from the above information, sigma x square means, so 16, 5 ,2, 4 and 5 -0 minus, and this value is, so 14 ,598 whole square divided by 13 and whole divided by 13 minus 1.
01:33
So finally this value is equal to 104 .908.
01:40
This is the standard deviation value and also the given the alpha value significant level that is 0 .05.
01:49
And now test hypothesis...