In order to assess whether or not the IV had any impact, it is ...

[Cooldude101]

In order to assess whether or not the IV had any impact, it is necessary
  to always compare the groups on the basis of the
 
  a. dependent variable.
  b. covariate.
  c. matching variable.
  d. none of these, since groups are not typically compared.

Question 2

Other things being equal, an alpha level of .05 should lead to a rejection
  of the null hypothesis
 
  a. more often than when alpha is set at .01
  b. more often than when alpha is set at .10
  c. less often than when alpha is set at .01
  d. none of these, since when alpha is set at .05, the null hypothesis cannot be rejected

[heinisk01]

Answer to Question 1

a

Answer to Question 2

a

[Cooldude101]

Thanks for the timely response, appreciate it

[FergA]

Wow, this really help