Exhibit 10-6 The Management of a Department Store Is Interested in Estimating

question 74

Multiple Choice

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

• A)49 to 64
• B)11.68 to 18.32
• C)125 to 140
• D)8 to 10

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Definitions:

Implements

A keyword in many programming languages used to specify that a class is going to use the interface(s) declared methods.

CompareTo

A method typically defined in an object to compare itself with another object of the same type, often used for sorting.

Calling Object

The object on which a method is invoked. In object-oriented programming, methods are called on objects to perform actions or access values.

Clone Method

A method that creates and returns a copy of an object, often used to duplicate instances with the same properties.