Estimated mean difference in page

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Reference no: EM131008649

Not happy with the previous results, the analyst in Exercise 2 takes a much larger random sample of cus- tomers from each website and records their page views. Here are the data:

Website 1

Website 2

n1 = 80

y 1 = 7.7 pages

s1 = 4.6 pages

n2 = 95

y 2 = 7.3 pages

s2 = 4.3 pages

a) Find the estimated mean difference in page visits be- tween the two websites.

b) Find the standard error of the estimated mean difference.

c) Calculate the t-statistic for the observed difference in mean page visits assuming that the true mean difference is 0.

Reference no: EM131008649

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