Question

A company with a large fleet of cars hopes to keep gasoline costs down and sets...

A company with a large fleet of cars hopes to keep gasoline costs down and sets a goal of attaining a fleet average of 27 mpg. To see if the goal is being met, they check the gasoline usage of 50 company cars at random, finding a sample mean of 26.12 mpg and a sample standard deviation of 4.83 mpg. We wish to determine if there is strong evidence that they failed to attain their fuel economy goal.

a) Write the appropriate hypotheses for this Hypothesis Test. Be sure to label your variables.

b) Find the P-value. You may use your calculator. Tell me which function you are using.

c) State your conclusions.

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A company with a large fleet of cars hopes to keep gasoline costs down and sets...
A company with a large fleet of cars hopes to keep gasoline costs down and sets a goal of attaining a fleet average of at least 27 miles per gallon. To see if the goal is being​ met, they check the gasoline usage for 70 company trips chosen at​ random, finding a mean of 25.45 mpg and a standard deviation of 5.15 mpg. Is this strong evidence they have failed to attain their fuel economy​ goal? Find the P-Value ____________...
  A company with a large effect of cars hopes to keep gasoline costs down and sets...
  A company with a large effect of cars hopes to keep gasoline costs down and sets a goal of attaining a fleet average of at least 26 miles per gallon. To see if the goal is being met, they check the gasoline usage for 50 company trips chosen at random, finding a mean of 25.02 mpg and a standard deviation of 4.83 mpg. Is this strong evidence that they have failed to attain their fuel economy goal?Thecorrectnullandalternativehypotheses for testing the...
A company with a large fleet of cars hopes to keep gasoline costs down and sets...
A company with a large fleet of cars hopes to keep gasoline costs down and sets a goal of attaining a fleet average of at least 25 miles per gallon. To see if the goal is being​ met, they check the gasoline usage for 70 company trips chosen at​ random, finding a mean of 24.37 mpg and a standard deviation of 4.38 mpg. Is this strong evidence they have failed to attain their fuel economy​ goal? Find the​ P-value. The​...
A company with a large fleet of cars hopes to keep gasoline costs down and sets...
A company with a large fleet of cars hopes to keep gasoline costs down and sets a goal of attaining an average gas mileage of at least 29 mpg. To see if the goal is being met, they check the gasoline usage for 56 company trips chosen at random, finding a mean of 25.722 mpg and a standard deviation of 8.888 mpg. Does the sample provide convincing evidence the mean gas mileage is less than the goal set? Use a...
A company with a large fleet of cars hopes to keep gasoline costs down and sets...
A company with a large fleet of cars hopes to keep gasoline costs down and sets a goal of attaining an average gas mileage of at least 29 mpg. To see if the goal is being met, they check the gasoline usage for 54 company trips chosen at random, finding a mean of 26.766 mpg and a standard deviation of 8.087 mpg. Does the sample provide convincing evidence the mean gas mileage is less than the goal set? Use a...
Congress regulates corporate fuel economy and sets an annual gas mileage for cars. A company with...
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 2011 goal of 30.2 mpg or better for their fleet of cars. To see if the goal is being met, they check the gasoline usage for 50 company trips chosen at random from over 1000 trips, finding a mean of 32.12 mpg and a standard deviation of 4.83 mpg. Is this strong evidence that they...
5. Congress regulates corporate fuel economy and sets an annual gas mileage for cars. A company...
5. 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 2011 goal of 30.2mpg or better for their fleet of cars. To see if the goal is being met, they check the gasoline usage for 50 company trips chosen at random, finding a mean of 32.12mpg and a standard deviation of 4.83mpg. In this strong evidence that they have attained their fuel economy goal?...
The chief Financial Officer (CFO) for a company with a large fleet of cars regularly used...
The chief Financial Officer (CFO) for a company with a large fleet of cars regularly used for company business is concerned about gas consumption during the many trips for which these company cars are used. In an effort to investigate the fuel efficiency of the company fleet cars, the CFO randomly selects the fifty trips for which company cars are used and the CFO determines that the gas mileage for thee trips is, on average, 25.02 miles per gallon with...
A limousine company is concerned with increasing costs of maintaining their fleet of 150 cars. After​...
A limousine company is concerned with increasing costs of maintaining their fleet of 150 cars. After​ testing, the company found that the emissions systems of 17 out of the 29 cars they tested failed to meet pollution control guidelines. They had forecasted costs assuming that a total of 15 cars would need updating to meet the latest guidelines. Is this strong evidence that more than 10 % of the fleet might be out of​ compliance? Test an appropriate hypothesis and...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT