Test: POST UNIT 6 - TEST . Ch. 9 Question 12 This Test: 13 pts possible Submit Test The accompanying data represent the total travel lax (in dollars) for a 3-day business trip in B randomly selected cities. A normal probability plot suggests the data could come from a population that is normally distributed A boxplot Indicates there are no outliers, Complete parts (a) through (c) below 68 55 78 86 70 86 84 68 79 27 85 06 100 72 99.05 Click the icon to view the table of critical t-values. (a) Determine a point estimate for the population mean travel tax. A point estimate for the population mean travel tax is 5 (Round to two decimal places as needed.) (b) Construct and Interpret a 95% confidence interval for the mean tax paid for a three-day business trip. Select the correct choice below and fill In the answer boxes to complete your choice (Round to two decimal places as needed ) O A. There is a % probability that the mean travel tax for all cities is between $ and $ O B. The travel tax is between 5 | and $ for % of all cities. O C. One can be % confident that the mean travel tax for all cities is between $ and s O D. One can be |% confident that the all cities have a travel tax between $ and 5 (c) What would you recommend to a researcher who wants to increase the precision of the interval, but does not have access to additional data? Click to select your answer(s) StatCrunch Next 6:54 PM Type here to search O 0 83F 16 040 8/3/2021 20