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. NOTE: Chicago has the highest travel taxes in the country at $101.27. It was verified that the data are normally distributed and that s = 12,324 dollars.

(a) Construct the 90% confidence interval for the standard deviation travel tax for a 3-day business trip. Enter the LOWER BOUND here.

(b) Construct the 90% confidence interval. Enter the UPPER BOUND here.

67.81 78.69 68.99 84.36

80.24 86.14 101.27 99.29