Mathematics, 01.08.2020 01:01 kaysayfam747
The accompanying data represent the total travel tax (in dollars) for a 3-day business trip in 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
68.87 78.25 70.44 84.67 79.79 86.33 100.24 98.26
(a) Determine a point estimate for the population mean travel tax
A point estimate for the population mean travel tax is $ 83.36. (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.)
A. The lower bound is $ and the upper bound is $. One can be % confident that all cities have a travel tax between these values.
B. The lower bound is $ and the upper bound is $ The travel tax is between these values for % of all cities.
C. The lower bound is $ and the upper bound is $ There is a % probability that the mean travel tax for all cities is between these values.
D. The lower bound is $ and the upper bound is One can be [95]% confident that the mean travel tax for all cities is between these values.
(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 decrease the level of confidence.
B. The researcher could decrease the sample standard deviation.
C. The researcher could increase the level of confidence
D. The researcher could increase the sample mean
Answers: 3
Mathematics, 21.06.2019 14:00
Chamberlin wants to bottle 1\8 of her apple cider. she pours the apple cider evenly among 6 bottles. what fraction of her apple cider will she put in each bottle? what expression could represent this situation?
Answers: 2
Mathematics, 21.06.2019 15:00
2x + 1 < 5 solve the following inequality. then place the correct number in the box provided.
Answers: 2
Mathematics, 21.06.2019 17:00
What properties allow transformation to be used as a problem solving tool
Answers: 1
The accompanying data represent the total travel tax (in dollars) for a 3-day business trip in rando...
Mathematics, 03.03.2020 03:30
Geography, 03.03.2020 03:30
History, 03.03.2020 03:30
Computers and Technology, 03.03.2020 03:30
Biology, 03.03.2020 03:30
History, 03.03.2020 03:30
Biology, 03.03.2020 03:30
Engineering, 03.03.2020 03:30
History, 03.03.2020 03:30
Mathematics, 03.03.2020 03:30
Computers and Technology, 03.03.2020 03:30