Rebecca Sims Is the General Manager of a Chain of Auto

question 30

Multiple Choice

Rebecca Sims is the general manager of a chain of auto parts stores.There are 400 stores in the country and they are divided up into seven divisions based upon geography.Each division has a division manager.The firm prides itself on keeping close tabs on customer satisfaction,and Rebecca has decided to take a sample of the 400 to test a new surrogate measure of customer satisfaction - the dollar value of returned merchandise.Each sample store reports daily the dollar value of merchandise returned and an average is calculated for each division.When Rebecca sees the first set of results,she wants to know if the differences between the division means are real or due to sampling error.Rebecca should use which test?

• A)a z test of the difference between two percentages
• B)independent samples t test
• C)paired samples t test
• D)ANOVA
• E)division differences test

---

Definitions:

Rename

Rename means changing the name of a file, folder, or identifier to something else while maintaining its contents or value.

Field

An element in databases or forms that can contain data, like a column in a database table or a textbox in a form where information can be entered or displayed.

Blank Desktop Database

A new, empty database file created in database software like Microsoft Access, ready for data entry and design customization.

Custom Desktop Database

A database application tailor-made to suit specific needs, often designed for use on a single computer or within a small organization.