A Used Car Lot Owner Wanted to Estimate the Amount

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