Based on the above results, the appropriate p-value for the test that the population means are equal is:

Which of the following is NOT a statistical assumption of the independent means t-test?

The accuracy of an inference to a population based upon a sample depends upon the

If a research conducts a one-mean z-test at an alpha level of .05 and computes a p-value of 0.0236, she should

The researcher’s null hypothesis is that the test score means for boys and girls are equal. Based on the above results the researcher should:

How does sample size affect the width of a confidence interval?

A colleague has calculated a 95% confidence interval about the sample mean as: 16 < u < 25. What interpretation should your colleague make? 

A researcher has collected some data related to a new method of teaching reading. She conducted an independent means t-test and failed to reject the null hypothesis at alpha=.05. She calculated a sample effect size (d) of 0.90. What advice is the best regarding the results of this research?

Based on the above results, the appropriate p-value for the test that the population means are equal is:

Drs. Smith and Jones each collect identical data and each conduct an independent-means t-test. Dr. Smith uses an alpha level of 0.05, but Dr. Jones insists on an alpha of 0.001. Which of these researchers has greater power in her test of the null hypothesis?