20) Sally conducts a simple pre-test/post-test study to determine how much food waste is accumulated in Commons before and after the college decides to remove all trays (upon which to carry plates, glasses, etc.) from the dining hall. She runs a dependent samples t-test and finds that t is a negative value. Because t is negative, she’s worried she’s done something wrong. Has she? Why or why not (explain why it is or is not possible to get a negative t-value in this case). (2 points)
21) Researchers conduct a between-subjects factorial ANOVA (also known as a two-way ANOVA) which looks at the effects of sex and age group (not raw age) on self-esteem scores (which can range from 10 to 40).
a) List the independent variables and their levels in this example. (2 pts)
b) What are the 3 specific null hypotheses that can be tested in this example? (3 pts)
c) The results of the ANOVA are pasted on the next page. Which of the three null hypotheses should we reject? Why? (2 pts)
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.Read more
Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.Read more
Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.Read more
Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.Read more
By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.Read more