Employ this table to complete the tasks which follow it:
| Height (in inches) |
Frequency |
| 50-52 |
5 |
| 53-55 |
8 |
| 56-58 |
12 |
| 59-61 |
13 |
| 62-64 |
11 |
a. Determine the class width
b. Determine the midpoint of the first class
c. Determine the class boundaries of the first class
d. Determine the relative frequency for each class