Homework Help: statistics

Posted by Lezlie on Wednesday, June 4, 2008 at 9:01pm.

The researcher wanted to test the hypothesis that Ho: μ=3, knowing the population, which was normal, had a variance of 1.00.

--
How powerful would this test be against the alternative hypothesis that
Ha: μ=4, given that n=15, α = .05

statistics - MathGuru, Tuesday, June 10, 2008 at 10:25am
The probability of making a Type II error is equal to beta. A Type II error is failure to reject the null when it is false. The power of the test is 1-beta and is the correct decision of rejecting the null when it is false. The alpha level directly affects the power of a test. The higher the level, the more powerful the test. Sample size also affects power. I'm not sure if your question is asking to calculate the actual power of the test or just determine if the test itself is powerful. If I'm interpreting the question correctly, then the test has power at alpha .05.

I hope this will be some help to you.

Answer this Question

Related Questions

Statistics - I have a question that involves explaining what is wrong in each of...
statistics - A researcher wants to carry out a hypothesis test involving the ...
Business Statistics - In a goodness-of-fit test, the null hypothesis states that...
statistics - Q. The MBA department is concerned that dual degree students may be...
Statistics - testing for the differences between means of 2 independent ...
Psychology/Statistics - For each of the following samples that were given an ...
statistics - A statistics practitioner formulated the following hypothesis: Ho: ...
business statistics - for a sample of 12 items from a normally distributed ...
Statistics - The ____________ is a hypothesis-testing procedure in which there ...
Statistics - The makers of the MAGNETIZER Engine Energizer System (EES) claim ...

For Further Reading

First Name:
School Subject:
Answer: