***PLEASE TYPE ANSWERS***
Five students were tested before and after taking a class toimprove their study habits. They were given articles to read whichcontained a known number of facts in each story. After the storyeach student listed as many facts as he/she could recall. Thefollowing data was recorded.
| Before | 10 | 12 | 14 | 16 | 12 |
| Atter | 15 | 14 | 17 | 17 | 20 |
| | | | | |
| a. | What is the alternative hypothesis? |
| b. | What is the null hypothesis? |
| c. | What is your conclusion, using á = 0.052tail? |
| d. | What type error may you be making because of your conclusion inpart c?  Please show all work. |
| e. | What is the size of effect, using Cohen’s d? |
