In: Statistics and Probability
What did the researcher do to cause the change in the shaded
regions in the two distributions?
| a. | 
 She changed alpha from .05 to .10.  | 
|
| b. | 
 She changed from a non-directional to a directional alternative hypothesis.  | 
|
| c. | 
 She increased the size of her sample.  | 
|
| d. | 
 She changed alpha from .05 to .01.  |