If the usual assumptions behind parametric tests are met (at ...

[vicky]

If the usual assumptions behind parametric tests are met (at least approximately),
 
  a. distribution-free tests are more powerful than parametric tests.
  b. distribution-free tests are somewhat less powerful than parametric tests.
  c. the tests are indistinguishable.
  d. you shouldn't use a parametric test.

Question 2

A distribution-free test
 
  a. is almost synonymous with a nonparametric test.
  b. is a test that makes few assumptions about the distribution from which the data were drawn.
  c. usually has less power than a parametric test.
  d. all of the above

[Leostella20]

Answer to Question 1

B

Answer to Question 2

D