If the homogeneity of variance assumption is violated in an ...

[future617RT]

If the homogeneity of variance assumption is violated in an independent groups t test, this means _________.
 
  a. the populations from which the samples were drawn have different standard deviations
  b. you should use the sign test
  c. the sample sizes should be equal and N greater than 30 to use the t test
  d. the populations from which the samples were drawn have different standard deviations and the sample sizes should be equal and N greater than 30 to use the t test
  e. all of these

Question 2

Assuming large between subject variability, which of the following tests is usually the most sensitive (N held constant)?
 
  a. t test for correlated groups c. t test for independent groups
  b. sign test d. they are all equal in sensitivity

[TheNamesImani]

Answer to Question 1

D

Answer to Question 2

A