DEA-7TT2 Exam Dumps | The average purchase size from your online sales site is $17, 200. The customer experience team believes

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EMC.DEA-7TT2.v2025-08-19.q115
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Question 87/115

The average purchase size from your online sales site is $17, 200. The customer experience team believes a certain adjustment of the website will increase sales.
A pilot study on a few hundred customers showed an increase in average purchase size of $1.47, with a significance level of p=0.1. The team runs a larger study, of a few thousand customers. The second study shows an increased average purchase size of $0.74, with a significance level of 0.03.
What is your assessment of this study?
Response:

A. The change in purchase size is not practically important, and the good p-value of the second study is probably a result of the large study size.

B. The difference in the change in purchase size between the two studies is troubling; The team should run another, larger study.

C. The p-value of the second study shows a statistically significant change in purchase size. The new website is an improvement.

D. The change in purchase size is small, but may aggregate up to a large increase in profits over the entire customer base.

Correct Answer: A

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