Click the icon to view the table of critical t-values 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 $ and 5 for % of all cities. O C. One can be % confident that the mean travel tax for all cities is between $ and $ O D. One can be % confident that the all cities have a travel tax between $ and $ (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? A. The researcher could increase the sample mean O B. The researcher could increase the level of confidence. O C. The researcher could decrease the sample standard deviation O D. The researcher could decrease the level of confidence. Click to select your answer(s) StatCrunch Type here to search O 83"F