Which of the following research designs, if conducted correctly ...

[lindiwe]

Which of the following research designs, if conducted correctly without the influence of
  extraneous variables, would allow you to make cause-and-effect conclusions?
 
  A) quasi-experimental
  B) two-group design with random assignment and IV manipulation
  C) ex post facto study
  D) B and C only
  E) all of the above because there is an IV

Question 2

This nonparametric test is used when you have ordinal data and two correlated groups.
 
  A) rank sums test
  B) Kruskal-Wallis H Test
  C) Mann-Whitney U Test
  D) chi-square test for two levels of a single nominal variable
  E) Wilcoxon T Test

[brittrenee]

Answer to Question 1

B

Answer to Question 2

E

[lindiwe]

Thank you!

[brittrenee]

Happy to help