A Used Car Lot Owner Wanted to Estimate the Amount

question 3

Multiple Choice

A used car lot owner wanted to estimate the amount spent by customers during the summer months. She took a random sample of customers and recorded the amount they spent. A histogram showed the data was right-skewed so she took the log of each value and verified that the distribution of these values was more normally distributed. What test/method should she use to estimate the mean amount spent during the summer months?

• A)Data transformation
• B)Paired t-test
• C)Sign Test
• D)Mann-Whitney Test

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Definitions:

Rubidium

A soft, silvery-white metallic element, symbol Rb, used in research and in manufacturing specialty glasses.

Elemental Symbol

A one or two-letter abbreviation that represents an element on the periodic table.

Gold

A chemical element with the symbol Au (from Latin: aurum) and atomic number 79, valued for its rarity, malleability, and as a monetary standard.

Elemental Symbol

A one or two-letter abbreviation assigned to each chemical element based on its name, often derived from its name in Latin.