Statistics select all that apply

PART 2: SELECT ALL THAT APPLY (7 POINTS) CIRCLE ALL CORRECT ANSWERS 7. Which of the following distributions DO NOT vary depending on degrees of freedom? . The z distributions. b. The t distributions. c. The F distributions. 8. If you run a study and find an obtained F value of F(3,20) = 6.10, which of the following are accurate conclusions? (Select all that apply) a. reject the null hypothesis. b. do not reject the null hypothesis. c. conclude that there is a significant effect. d. conclude that there is no significant effect. e . conclude p is greater than .05 f. conclude p is less than .05 . none of the above 9. A psychologist wants to know if exposure to visual stimulus (thrilling vs. calming video clip) and caffeine consumption (none vs. 500 mg) affect dangerous behavior tendencies. The psychologist randomly assigns half of participants to ingest 500mg of caffeine and half to ingest a placebo pill. Participants then watch either a thrilling sky-diving video or a calming nature video. After videos have concluded, all participants complete a measure of dangerous behavior tendencies. Which of the following is true of this proposed study: (Select all that apply) a) it is a quasi-experiment b) it is a true experiment c) it is between subjects d) it is within subjects e) it can be analyzed with a z-test f) it can be analyzed with a type of t-test g) it can be analyzed with a One-way ANOVA h) it can be analyzed with a factorial ANOVA