Question

A car has a gas mileage listing of 28 miles per gallon. You take the car...

A car has a gas mileage listing of 28 miles per gallon. You take the car out on 56 trips and find the average gas mileage to be 25 with a standard deviation of 6 mpg.

a) At the .01 level is the car getting gas mileage less than expected? (p = 0)

b) True or false: natural variability is the reason for the change in gas mileage

Answer:

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 certain car model has a mean gas mileage of 31 miles per gallon (mpg) with...
A certain car model has a mean gas mileage of 31 miles per gallon (mpg) with astandard deviation 3 mpg. A pizza delivery company buys 43 of these cars. What is theprobability that the average mileage of the fleet is greater than 30.7 mpg?
The mean gas mileage for a hybrid car is 56 miles per gallon. Suppose that the...
The mean gas mileage for a hybrid car is 56 miles per gallon. Suppose that the gasoline mileage is approximately normally distributed with a standard deviation of 3.3 miles per gallon.​ (a) What proportion of hybrids gets over 61 miles per​ gallon? (b) What proportion of hybrids gets 52 miles per gallon or​ less? (c) What proportion of hybrids gets between 59 and 62 miles per​ gallon? (d) What is the probability that a randomly selected hybrid gets less than...
A certain car model has a mean gas mileage of 31 miles per gallon (mpg) with...
A certain car model has a mean gas mileage of 31 miles per gallon (mpg) with a standard deviation 3 mpg. A pizza delivery company buys 43 of these cars. What is the probability that the average mileage of the fleet is greater than 30.7 mph
Suppose you buy a new car whose advertised mileage is 23 miles per gallon​ (mpg). After...
Suppose you buy a new car whose advertised mileage is 23 miles per gallon​ (mpg). After driving your car for several​ months, you find that its mileage is 18.5 mpg. You telephone the manufacturer and learn that the standard deviation of gas mileages for all cars of the model you bought is 1.24 mpg. a. Find the​ z-score for the gas mileage of your​ car, assuming the advertised claim is correct. b. Does it appear that your car is getting...
A certain model of automobile has its gas mileage (in miles per gallon, or mpg) normally...
A certain model of automobile has its gas mileage (in miles per gallon, or mpg) normally distributed, with a mean of 32 mpg and a standard deviation of 4 mpg. Find the probability that a car selected at random has the following gas mileages. (Round your answers to four decimal places.) (a) less than 26 mpg (b) greater than 34 mpg (c) between 30 and 34 mpg
the average gas mileage of a certain model car is 2.6 miles per.gallon. if gas mileage...
the average gas mileage of a certain model car is 2.6 miles per.gallon. if gas mileage are normally distributed with standard deviation of 0.15 miles per gallon find the probability that a car has a gas mileage of between 25.8 and 26.2 miles per gallon
A car salesperson claims that the mean gas mileage for its luxury sedan is at least...
A car salesperson claims that the mean gas mileage for its luxury sedan is at least 25 miles per gallon​ (mpg). A random sample of 30 cars has a mean gas mileage of 24 mpg and a (sample) standard deviation of 3.5 mpg.             a)    State the null and alternative hypotheses.              b)    Determine the P-Value             c)     State the outcome of the test at α = 0.05  
A Ford Focus manual transmission gets an average of 28 miles per gallon (mpg) in city...
A Ford Focus manual transmission gets an average of 28 miles per gallon (mpg) in city driving with a standard deviation of 1.6 mpg. Assume that gas mileage is normally distributed. a) If a Focus is selected at random, what is the probability that it will get more than 31 mpg? b) What is the probability that a randomly selected Focus will get between 20 and 30 mpg? c) What is the probability that a randomly selected Focus will get...
1) What Is Significant? Padme checks her car’s gas mileage every time she fills up the...
1) What Is Significant? Padme checks her car’s gas mileage every time she fills up the tank. Usually it comes out to about 28 miles per gallon, give or take 3 miles per gallon. a) This week Padme calculates the mileage from her last tank of gas as being 24 MPG. Should she attribute this to normal fluctuations in her mileage, or should she consider this statistically significant and suspect that something’s going on with her car? [.5 point] b)...
Gas mileage, in miles per gallon, was measured for five 2012 Ford Explorer SUVs. The five...
Gas mileage, in miles per gallon, was measured for five 2012 Ford Explorer SUVs. The five results are as follows: 20.4 19.6 17.1 17.9. 18.7 a. Compute the sample mean. b. Compute the sample variance and standard deviation. c. Construct a 95% confidence interval for the average gas mileage in miles per gallon.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT