Concept explainers
To find: the percent of vehicles having worse gas mileage than the Malibu
Answer to Problem 79E
92.9% of vehicles which have worse gas mileage than Malibu.
Explanation of Solution
Given:
The mean gas mileage,
The standard deviation of gas mileage,
Chevrolet Malibu has a combined gas mileage of 25 mpg.
Calculation:
If the random variable X denotes the number of vehicles that have gas mileage, then we are given that
It is given that Chevrolet Malibu has a combined gas mileage of 25 mpg.
Now it is supposed to find the percent of vehicles that have worse gas mileage than the Malibu. In other words, we are supposed to calculate
Conclusion: Hence, there exist 92.9% of vehicles which have worse gas mileage than Malibu.
Chapter 3 Solutions
The Practice of Statistics for AP - 4th Edition
Additional Math Textbook Solutions
Basic Business Statistics, Student Value Edition
Introductory Statistics (2nd Edition)
An Introduction to Mathematical Statistics and Its Applications (6th Edition)
Statistics for Business and Economics (13th Edition)
Elementary Statistics (13th Edition)
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