Question

A market analyst wants to know if the new website he designed is showing increased page views per visit. A customer is randomly sent to one of two different​ websites, offering the same​ products, but with different designs. The accompanying table shows the data from 30 randomly chosen customers from each website. Complete parts a through e below.

c) Find the sample variance for each website.

s Subscript Upper A Superscript 2s2A= __

s Subscript Upper B Superscript 2s2B= __

A	B
4	3
14	13
9	10
7	9
14	13
2	3
8	15
3	4
10	9
12	11
3	2
12	14
15	12
12	13
2	3
9	8
11	8
3	4
12	11
13	14
13	12
9	10
7	6
5	6
11	13
13	14
7	8
4	3
8	7
12	15

Answer 1

Ans:

For upper superscrit the sample variance is

For upper superscrit B the sample Variance is