00:01
In this question here we have given that the summation i equals to 1 to 9 yai is equals to 64 .8 and summation i equals to 1 to 9 y square ai is equals to 472 .84.
00:22
Here the summation i equals to 1 to 9 yci is equals to 72 .9.
00:31
Summation i equals to 1 to 9 y square ci is equals to 598 .67.
00:42
Here we have given n equals to 9, alpha is equals to 0 .01.
00:47
Here the hypothesis are h0, sigma a square is equals to sigma c square and alternative hypothesis sigma a square is not equals to sigma c square.
01:03
Here we are calculating the variance which is denoted by sa square which is equals to summation i equals to 1 to n yai square minus summation i equals to 1 to n yai square divided by n.
01:29
Here it is divided by n minus 1.
01:32
Here we put the values.
01:34
Then we get 472 .84 minus 64 .8 square divided by 9.
01:42
It is divided by 9 minus 1.
01:46
Here it's equals to 0 .785.
01:50
Here next we have to find the variance of c square which is equals to summation i equals to 1 to n yci square minus summation i equals to 1 to n yci whole square divided by n.
02:07
It is whole divided by n minus 1.
02:10
Here we put the value...