Assuming mileage are normally distributed, can you conclude that the use of the gasoline additive increases mileage at the 2.5% significance level?
Assuming mileage are normally distributed, can you conclude that the use of the gasoline additive increases mileage at the 2.5% significance level?
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
Related questions
Question
The manufacturer of a gasoline additive claims that the use of this additive increases’
gasoline mileage. A random sample of 6 cars was selected, and these cars were driven
for one week without the gasoline additive and then for one week with the additive.
The following table gives the mileage (in miles per gallon) for these cars with and
without the additive:
car | 1 | 2 | 3 | 4 | 5 | 6 |
mileage without additive | 24.6 | 28.3 | 18.9 | 23.7 | 15.4 | 29.5 |
mileage with additive | 26.3 | 31.7 | 18.2 | 25.3 | 18.3 | 30.9 |
Assuming mileage are
gasoline additive increases mileage at the 2.5% significance level?
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