A Major Department Store Chain Is Interested in Estimating the Mean

question 151

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: = $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 μ?

• 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

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Definitions:

Puritan Colonies

Settlements established in North America by Puritans, who sought religious freedom and aimed to create a society based on their theological beliefs.

Beaver Wars

Conflicts in the 17th century involving Native American tribes and European colonists, driven by the demand for beaver pelts.

Huron

A group of Native American peoples historically located in the region of the Great Lakes; known for their role in the fur trade and alliances during early European colonization.