The accompanying data represent the total travel tax? (indollars) for a? 3-day business trip in 8 randomly selected cities.A normal probability plot suggests the data could come from apopulation that is normally distributed. A boxplot indicates thereare no outliers. Complete parts? (a) through? (c) below. 68.1279.32 68.56 84.72 79.34 86.19 100.95 98.55 LOADING... Click theicon to view the table of critical? t-values. ?(a) Determine apoint estimate for the population mean travel tax. A point estimatefor the population mean travel tax is ?$ nothing. ?(Round to twodecimal places as? needed.) ?(b) Construct and interpret a 95?%confidence interval for the mean tax paid for a? three-day businesstrip. Select the correct choice below and fill in the answer boxesto complete your choice. ?(Round to two decimal places as? needed.)A. One can be nothing?% confident that the all cities have a traveltax between ?$ nothing and ?$ nothing. B. The travel tax is between?$ nothing and ?$ nothing for nothing?% of all cities. C. There isa nothing?% probability that the mean travel tax for all cities isbetween ?$ nothing and ?$ nothing. D. One can be nothing?%confident that the mean travel tax for all cities is between ?$nothing and???$ nothing. ?(c) What would you recommend to aresearcher who wants to increase the precision of the? interval,but does not have access to additional? data? A. The researchercould decrease the level of confidence. B. The researcher couldincrease the level of confidence. C. The researcher could decreasethe sample standard deviation. D. The researcher could increase thesample mean. Click to select your answer(s).