Kathryn has completed a study and rejected the null hypothesis when it was false. Kathryn has made a _________.
a. correct decision.
b. a type I error.
c. a type II error.
d. a type III error.
Question 2
Look at the research matrix below without column headings. If you wanted to have 10 participants for each condition, how many participants would you need for a within subjects factorial design?
Angry Angry
Non-confrontational Confrontational
Exciting Exciting
Non-confrontational Confrontational
Neutral Neutral
Non-confrontational Confrontational
a. 10
b. 20
c. 40
d. 60
