Exhibit 10-6
The management of a department store is interested in estimating the difference between the mean credit purchases of customers using the store's credit card versus those customers using a national major credit card. You are given the following information. 
-Refer to Exhibit 10-6. A 95% confidence interval estimate for the difference between the average purchases of the customers using the two different credit cards is
Definitions:
Another Person
Refers to an individual distinct from oneself, often mentioned in contexts requiring interaction, consideration, or comparison between individuals.
Self-Concept
An individual's understanding and beliefs about themselves, including their attributes, who and what they are.
Disclosure Reciprocity
The tendency for one individual to match the level of personal information disclosed by another during conversations.
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