A Major Department Store Chain Is Interested in Estimating the Mean

question 8

Multiple Choice

A major department store chain is interested in estimating the mean amount its credit card customers spent on their first visit to the chain's new store in the mall.Fifteen credit card accounts were randomly sampled and analyzed with the following results: x? = $50.50 and S = 20 .Assuming the distribution of the amount spent on their first visit is normal,what is the shape of the sampling distribution of the sample mean that will be used to create the desired confidence interval for ? ?

• A)Approximately normal with a mean of $50.50
• B)A standard normal distribution
• C)A t distribution with 15 degrees of freedom
• D)A t distribution with 14 degrees of freedom

---

Definitions:

Authority

The right or power assigned to an individual or group to make decisions, direct others, and enforce rules within a specific realm.

Situational Factors

External elements or circumstances that can influence an individual's behavior or performance in a particular context.

Environmental Factors

External elements or conditions that affect living organisms and ecosystems, including natural phenomena, human activities, and sociopolitical context.

Seating Arrangements

The organization of where people sit in a workplace, classroom, or event, which can affect communication, collaboration, and social dynamics.