While we are looking at this fuel efficiency data, let's also compute a 99% confidence interval for the difference between average city mileage of manual and automatic cars. For your reference, the summary statistics and comparative box plots are below. Enter the lower and upper confidence limits, rounded to 2 decimal places, below. City MPG, Automatic City MPG, Manual Mean 16.12 19.85 SD 3.58 4.51 26 26 357 25- 15 automatic manual City MPG The 99% confidence interval is ( ).
While we are looking at this fuel efficiency data, let's also compute a 99% confidence interval for the difference between average city mileage of manual and automatic cars. For your reference, the summary statistics and comparative box plots are below. Enter the lower and upper confidence limits, rounded to 2 decimal places, below. City MPG, Automatic City MPG, Manual Mean 16.12 19.85 SD 3.58 4.51 26 26 357 25- 15 automatic manual City MPG The 99% confidence interval is ( ).
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:While we are looking at this fuel efficiency data, let's also compute a 99% confidence interval for the difference between average city mileage of manual and automatic cars. For your reference, the summary statistics and comparative box plots are below. **Enter the lower and upper confidence limits, rounded to 2 decimal places, below.**
| | City MPG, Automatic | City MPG, Manual |
|--------------------------|---------------------|------------------|
| **Mean** | 16.12 | 19.85 |
| **SD** | 3.58 | 4.51 |
| **n** | 26 | 26 |
Below the table are box plots comparing the city MPG of automatic and manual cars. The box plot shows:
- For automatic cars, the interquartile range is lower than that for manual cars.
- The median city MPG for automatic cars is around 16, while for manual cars it is higher.
- The spread of MPG data is greater for manual cars, with an upper whisker extending beyond 30.
**The 99% confidence interval is ( _____ , _____ ).**
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