State null and alternative versions of research hypothesis

Reference no: EM13520662

Most individuals are aware of the fact that the average annual repair cost for an automobile depends on the age of the automobile. A researcher is interested in finding out whether the variance of the annual repair costs also increases with the age of the automobile. A sample of 26 automobiles 4 years old showed a sample standard deviation for annual repair costs of $170 and a sample of 25 automobiles 2 years old showed a sample standard deviation for annual repair cost of $100.

a. State the null and alternative versions of the research hypothesis that the variance in annual repair costs is larger for the older automobiles.

b. At a .01 level of signifigance, what is your conclusion? What is the p-value? Discuss the reasonableness of your findings.

Reference no: EM13520662

Questions Cloud

Find the critical angle of total internal reflection : Find the critical angle of total internal reflection from glass with refraction index n = 1.51 into air

Important literary forum for abolitionists : During the mid 1800s, slave narratives became an important literary forum for abolitionists. The Narrative of the Life of Frederick Douglass: An American Slave was written in first person, while the Narrative of Sojourner Truth was in third person.

Determine what should be the transmission voltage : A transmission line that has a resistance of 0.5 omh per km of length is used to transmit 200 MW across 300 miles. what should be the transmission voltage

Determine the final kinetic energy of the electron : An x ray with a wavelength of 0.100 collides with an electron that is initially at rest. What is the final kinetic energy of the electron

State null and alternative versions of research hypothesis : State the null and alternative versions of the research hypothesis that the variance in annual repair costs is larger for the older automobiles. At a .01 level of signifigance, what is your conclusion? What is the p-value? Discuss the reasonablenes..

Is he carrying the quest for wisdom to an absurd extreme : Would you escape from prison if you could and believed you were innocent? Why or why not? If so, then where does Socrates’ argument go wrong? Is he carrying the quest for wisdom to an absurd extreme?

How far is the rhino from the origin : A rhinoceros is at the origin of coordinates at time t1 = 0. For the time interval from t1 to t2 = 15.0s , the rhino's average velocity has x-component -3.2 m/s and y-component 6.0 m/s. How far is the rhino from the origin?

Investors commonly use the standard deviation : Investors commonly use the standard deviation of the monthly percentage return for a mutual fund as a measure of the risk for the fund; in such cases, a fund that has a larger standard deviation is considered more risky than a fund with a lower st..

How does crito try to convince socrates to escape : How does Crito try to convince Socrates to escape? What fallacies can you identify in his reasoning? Socrates concludes that he will not escape. What are the premises to his argument? Evaluate them in terms of our criteria for cogent reasoning.

User Account

All Pages