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. Here are the page views from five randomly chosen customers from each website:

Website A Website B

9 ........... 10

4 ........... 13

14 ........... 2

7 ........... 3

2 ........... 7

a) Find the sample mean page views for each website.

b) Find the estimated difference of the sample mean page views of the two websites.

c) Find the sample variances for each website.

d) Find the sample standard deviations for each website.

e) Find the standard error of the difference of the sample means.

Website A Website B

9 ........... 10

4 ........... 13

14 ........... 2

7 ........... 3

2 ........... 7

a) Find the sample mean page views for each website.

b) Find the estimated difference of the sample mean page views of the two websites.

c) Find the sample variances for each website.

d) Find the sample standard deviations for each website.

e) Find the standard error of the difference of the sample means.

Business Statistics

3rd edition

Authors: Norean Sharpe, Richard Veaux, Paul Velleman

ISBN: 978-0321925831

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