The t test enables researchers to evaluate the probability that ...

[MGLQZ]

The t test enables researchers to evaluate the probability that _____ was caused by the independent variable.
 
  a. the differences between the groups before data collection
  b. the extreme score in the control group, if there was one,
  c. the difference between the group means
  d. all of these

Question 2

The t test is a comparison of the ratio of
 
  a. treatment variance to subject variance
  b. treatment mean to subject mean
  c. treatment frequency to subject frequency
  d. all of these

[jessicaduplan]

Answer to Question 1

C
The t test evaluates the probability that the difference between the group means occurred by chance. Knowing that probability enables researchers to decide whether the independent variable was likely to have caused the difference.

Answer to Question 2

A
The conceptual ratio of the t test is the variance produced by the treatment (treatment variance) divided by the variance from all other sources (subject variance)

[MGLQZ]

Thank you!

[jessicaduplan]

Happy to help