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. 68.04, 78.59, 68.11, 82.54, 80.06, 87.54, 100.71, 99.22 (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.) Part 2 (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. There is a enter your response here% probability that the mean travel tax for all cities is between $enter your response here and $enter your response here. B. One can be enter your response here% confident that the mean travel tax for all cities is between $enter your response here and $enter your response here. C. One can be enter your response here% confident that all cities have a travel tax between $enter your response here and $enter your response here. D. The travel tax is between $enter your response here and $enter your response here for enter your response here% of all cities.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 19PFA

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Part 2

(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.)

There is a

enter your response here%

probability that the mean travel tax for all cities is between

$enter your response here

and

$enter your response here.

One can be

enter your response here%

confident that the mean travel tax for all cities is between

$enter your response here

and

$enter your response here.

One can be

enter your response here%

confident that all cities have a travel tax between

$enter your response here

and

$enter your response here.

The travel tax is between

$enter your response here

and

$enter your response here

for

enter your response here%

of all cities.

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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