Behavioral Sciences STAT

The first 10 students who arrived for the Friday lecture filled out a questionnaire on their attitudes toward the instructor.The first 10 who were late for the lecture were spotted, and afterward filled out the same questionnaire. The appropriate design for testing the significance of the difference between the means is

At a card players' club, the poker players had a contest with the blackjack players to see who could win the most money.The appropriate design for testing the significance of the difference between the means is

The freshmen competed with the sophomores to see who could raise the most money by recycling.The appropriate design for testing the significance of the difference between the means is

What does the homogeneity of variance assumption state?

Which of the following is not one of the assumptions of the t-test for independent samples?

How is the null hypothesis of the independent-samples t-test verbalized?

N represents _____, whereas n represents _____.

The sampling distribution of differences between means is the distribution of all possible

What does the independent-samples t-test determine?

What is pooled variance?

What is the standard error of the difference?

What can we conclude if we reject the null hypothesis in an independent-samples t-test?

What are we stating if we reject the null hypothesis for the independent-samples t-test?

The freshmen competed with the sophomores to see who could raise the most money by recycling.Each freshman was paired with a sophomore of the same gender.The appropriate design for testing the significance of the difference between the means is

In a study involving stress among college students, a group of seniors are asked to complete a stress survey.After a two-hour seminar on relaxation methods, they are asked to complete the stress survey again.The appropriate design for testing the significance of the difference between the means is

Eighteen overweight volunteers weighed themselves before and after a two-week diet.The appropriate design for testing the significance of the difference between the means is

To determine the extent to which the conditions of the independent variable determine dependent scores, we should compute

In an experiment, the "proportion of variance accounted for" is also called the

How is the proportion of variance accounted for calculated?

By convention, the mean of the sampling distribution equals