Travelers pay taxes for ying, car rentals, and hotels. The following data represent the total travel tax

Travelers pay taxes for flying, car rentals, and hotels. The following data represent the total travel tax for a 3-day business trip in eight randomly selected cities.

(a) Determine a point estimate for the population mean travel tax.
(b) Use the normal probability plot and boxplot shown next to assist in verifying the requirements for constructing a confidence interval for the mean travel tax.

(c) Construct and interpret a 95% confidence interval to estimate the mean tax paid for a 3-day business trip.
(d) What would you recommend to a researcher who wants to increase the precision of the interval, but does not have access to additional data?

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