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Question: The editor of an automotive magazine has asked you to compare the mean gas mileages of city driving for three makes of compact cars. The editor has made available to you one car of each of the three makes, three drivers, and a budget sufficient to buy gas and pay the drivers for approximately 500 miles of city driving for each car.
a. Explain how you would conduct an experiment and gather the data for a magazine article comparing the gas mileage.
b. Suppose that you wish to test the null hypothesis that the mean gas mileages of city driving are the same for all three makes. Outline the procedure for using your data to conduct this test. Assume that the assumptions for applying analysis of variance are satisfied.
Use the population mean and standard deviation to find the z-score corresponding to 14.5%, the rate offered by the Bar Harbor Bank and Trust Company. Is this above or below the average?
Create a histogram of the time until first failure for this type of disc player.- Then find a 95% confidence interval for the mean time until failure for this type of disc player.
Let G be an unambiguous CFG without λ-productions. (a) If x L(G), show that the number of steps needed to derive x is linear in the length of x.
using the solution from problem 5 and given the list of crash times and costs determine the new diagram and
Suppose that 20% of the homes in a neighborhood has a swimming pool in their backyards and 50% has a garage. 15% of homes have both a garage and a swimming pool.
Determine percent of the garages take between 29 hours and 34 hours to erect? Determine percent of garages take 28.7 hours or less to erect?
For patients over age 80, probability is 0.05 that coronary bypass patient will die soon after surgery, if hospital performs eight such operations, determine the probability of two or more fatalities?
What are the characteristics of a normal distribution? Why is the normal distribution important in statistical analysis? What is the Standard Normal Distribution?
Compute b1, slope of an OLS regression line using dollars spent as dependent variable (Y) and age as independent variable (X).
In the Cash Now lottery game there are 10 finalists who submitted entry tickets on time. From these 10 tickets three grand prize winners will be drawn.
An Internal Revenue Service manager is comparing the results of recent taxpayer interviews conducted by two auditors. Of 200 taxpayers audited by Ms. Smith, 30% had to pay additional taxes. Of 100 audited by Mr. Burke, only 19% paid additional t..
A poll found that 69.9% of citizens felt the government was not working well. If 7 people were randomly selected, what is the probability that all 7 felt the government is not working well?
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