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?

  • CreatedApril 28, 2015
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