Question

Congress regulates corporate fuel economy and sets an annual gas mileage for cars. A company with a large fleet of cars hopes to meet the goal of 34.2 mpg or better for their fleet of cars. To see if the goal is being met, they check the gasoline usage for 45 company trips chosen at random, finding a mean of 37.20 mpg and a standard deviation of 5.29 mpg. Is this strong evidence that they have attained their fuel economy goal? Use 0.05 as the P-value cutoff level. What is the P-value

Answer 1

as p value is less then 0.05 level we reject null hypothesis and conclude that company meet the goal of 34.2 mpg or better for their fleet of cars.