A Major Department Store Chain Is Interested in Estimating the Mean

question 67

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 wererandomly sampled and analyzed with the following results: $\bar { X } = \$ 50.50$ and S= 20 , S being thestandard deviation.Construct a 95% confidence interval for the mean amount its credit card customers spent on their first visit to the chain's new store in the mall if the amount spent follows a normal distribution.

• A)$50.50 \(\pm\) $9.09
• B)$50.50\(\pm\) $10.12
• C)$50.50 \(\pm\) $11.00
• D)$50.50 \(\pm\) $11.08

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Definitions:

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Emancipation

The process of being freed from legal, social, or political restrictions; historically often refers to the freeing of slaves.

Lincoln

Abraham Lincoln, the 16th President of the United States, who led the country during the Civil War and played a key role in the abolition of slavery.

Hard War Policy

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