The accompanying data represent the total travel tax (in dollars) for a 3-day business trip in 8 randomly selected cities. A normal probability plot suggests the data could come from a population that...


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The accompanying data represent the total travel tax (in dollars) for a 3-day business trip in 8 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.<br>68.38<br>80.75<br>68.27<br>84.69<br>82.93<br>86.62 101.96<br>99.46 D<br>.....<br>(a) Determine a point estimate for the population mean travel tax.<br>A point estimate for the population mean travel tax is $<br>(Round to two decimal places as needed.)<br>(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.<br>(Round to two decimal places as needed.)<br>O A. One can be<br>% confident that all cities have a travel tax between $<br>and $<br>O B. The travel tax is between $<br>and $<br>for % of all cities.<br>O C. There is a<br>% probability that the mean travel tax for all cities is between $<br>and $<br>O D. One can be<br>% confident that the mean travel tax for all cities is between $<br>and $<br>(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?<br>The researcher could<br>the<br>

Extracted text: The accompanying data represent the total travel tax (in dollars) for a 3-day business trip in 8 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. 68.38 80.75 68.27 84.69 82.93 86.62 101.96 99.46 D ..... (a) Determine a point estimate for the population mean travel tax. A point estimate for the population mean travel tax is $ (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. One can be % confident that all cities have a travel tax between $ and $ O B. The travel tax is between $ and $ for % of all cities. O C. There is a % probability that the mean travel tax for all cities is between $ and $ O D. One can be % confident that the mean travel tax for all cities is 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? The researcher could the

Jun 04, 2022
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