Hypothesis testing

 You have many options for testing a hypothesis. For the following hypotheses, select the most appropriate testing procedure. Be prepared to justify your choice, stating the dependent variable and independent variable(s). Your choices include:

• t-test for independent groups;
• t-test for dependent means;
• ANOVA;
• Scheffé test;
• factorial analysis of variance;
• ANCOVA;
• multiple regression;
• chi square.

 

1. The differences between trainee scores on the training assessment instrument given to Monday morning groups and Wednesday morning groups, both of which were lead by the same trainer, can be attributed to chance.

2. Among the independent variables of years of work experience, level of education, IQ, and GRE score, only the addition of IQ improves the use of GPA as a predictor of success in the doctoral program.

3. A significant difference will exist between employees whose job performance improved or declined and whether the employee mentioned that they liked or disliked doing the training via distance education.

4. Students given the same criterion referenced test before and after the Ritchie New-Age Learning Module will show significant gains in test scores.

5. The use of Internet newsgroups offers a strong advantage, as measured by final grades, for adult students that work full-time; but a strong disadvantage for adult students that work part-time.

6. Performance assessments for day-shift workers will be higher than the assessments score for grave-yard shift workers.

7. A one-day training workshop can be given on any of the five work days because there is no significant difference in the training results of participants.

8. The one-day training workshop can be given on any of the five work days, even if the groups differ in years of experience, because there is no significant difference in the training results of the participants.

9. The experience an employee has as a trainer in the corporate setting and their experience as a corporate manager will determine success as the head of the Human Performance Department.

10. The number of mistakes made while navigating through a web-based training program that uses graphical navigation hints is significantly fewer than the number of mistakes made using either imbedded text based hints or the navigation tools found on the web browsers menu bar.