Exam 9: Testing the Difference Between Two Means

Your value of a statistic such as the t-test is greater than the critical value for α = .05 but less than the critical value for α = .01; consequently, you ______ the null hypothesis and state the level of significance as ______.

According to the textbook, what is the difference between the terms "nonsignificant" and "insignificant"?

In which of the following situations would you MOST likely use the t-test for dependent means?

The mean of the sampling distribution of the difference is equal to one.

Imagine the value of a statistic is greater than the critical value for α = .05 but less than the critical value for α = .01. Which is the MOST appropriate way to report the level of significance?

If your value of a statistic like the t-test falls in the ______ area of this distribution, you will ______ the null hypothesis because the probability of the statistic is ______.

Imagine the value of a statistic is greater than the critical value for α = .05 but less than the critical value for α = .01. In this situation you would ______ and state the level of significance as ______.

In which of the following situations would you be most likely to use a one-tailed rather than two-tailed alternative hypothesis?

A researcher comparing the means of two groups calculates the t-test for independent means and reports the following result: t(28) = 2.11, p <.05. This research study consisted of a TOTAL of ______ participants.

The assumption of normality is primarily concerned with ______.

In the t-test for dependent means, the symbol s_D stands for the ______.

A researcher asks 20 people to take a sip of two different colas (first Coke and then Pepsi) and rate the flavor of both. In analyzing this data, how should the null hypothesis be stated?