A certain car has a fuel efficiency of 36.4 miles per gallon (mi/gal). Express this efficiency in kilometers per liter (km
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A certain car has a fuel efficiency of 36.4 miles per gallon (mi/gal). Express this efficiency...
The fuel economy (in miles per gallon) of a certain car is E(x) = −0.01x2 + 0.54x +10.4, where x is the driving speed (in miles per hour, 20 ≤ x ≤ 60). At what speed is fuel economy greatest? x = mph
The fuel efficiency for a certain midsize car is given by E(V) = -0.018V2 + 1.620V + 3.7 where E(v) is the fuel efficiency in miles per gallon for a car traveling v miles per hour. (a) What speed will yield the maximum fuel efficiency? Round to the nearest mile per hour. mph (b) What is the maximum fuel efficiency for this car? Round to the nearest mile per gallon. mpg Need Help? Read It Watch It Talk to a...
If a car has an EPA mileage rating of 30 miles per gallon what is the rating in kilometers per liter? 1 L = 1.06 qt)
Fuel efficiency in miles per gallon) 1000 2000 1000 4000 Weight (in pounds) (a) For these 21 vehicles, as weight increases, fuel efficiency tends to ? (b) For these 21 vehicles, there is ? correlation between weight and fuel efficiency (c) Using the line of best fit, we would predict that a vehicle weighing 4000 pounds would have a fuel efficiency of approximately ? miles per gallon
Please help! It would be greatly appreciated! Fuel consumption is commonly measured in miles per gallon (mi/gal). An agency designed new fuel consumption tests to be used starting with 2008 car models. Listed below are randomly selected amounts by which the measured MPG ratings decreased because of the new 2008 standards. Find the range, variance, and standard deviation for the sample data. Is the decrease of 4 mi/gal unusual? Why or why not? 1 2 2 2 4 3 3...
Automobile fuel efficiency is often measured in miles that the car can be driven per gallon of fuel (highway mpg). Suppose we have a collection of cars. We measure their weights and fuel efficiencies, and generate the following scatterplot. HIGHWAY 40 35 30 25 2500 3000 4000 3500 WEIGHT 25 2500 3000 4000 3500 WEIGHT Which equation is a reasonable description of the least squares regression line for the predicted highway mpg? O predicted highway mpg - 52.3 -0.0067 (weight)...
The fuel efficiency in miles per gallon of all BMW 320i’s is approximately normally distributed with a mean of 25 and a standard deviation of 2. A dealer receives a shipment of a random sample of 320i’s (random with respect to mpg) from the factory. Hint: look at the sample sizes and think about which tables you’d need to use for these problems. (a) Find the probability that average fuel efficiency is less than 24 mpg if the dealer receives...
The average gas mileage of a certain model car is 29 miles per gallon. If the gas mileages are normally distributed with a standard deviation of 2.4, find the probability that a car has a gas mileage of between 30 and 35 miles per gallon.
Sports car or convertible? The following table presents the fuel efficiency, in miles per gallon, for a sample of convertibles and a sample of sports cars. Convertible Model MPG Sports Model MPG BMW 328i Mitsubishi Lancer Evolution Toyota Camry Solara Ford Mustang V6 Volkswagen Eos MINI Cooper Saab 9-3 Volkswagen GTI Honda Civic Si BMW 135i 23 Mazda Mazdaspeed Subaru Impreza WRX STI 24 Send date to Excel Part 1 of 2 Part 2 of 2 (b) Find the sample...
The maker of a certain model car claimed that the car averaged at least 36 miles per gallon of gasoline. A sample of nine cars was selected and each car was driven with one gallon of regular gasoline. The sample showed a mean of 34.43 miles with a standard deviation of 3 miles. Assume you doubt that the car can achieve 36 miles per gallon - you believe the fuel efficiency would actually be lower. State your hypothesis and test...