According to some research, males have better spatial skills than do females; and according to other research, females have better reading skills than males. A student is interested in determining which sex performs better on a word-search puzzle (a puzzle in which the words are hidden vertically, horizontally, and diagonally within an array of letters) since this type of puzzle involves both spatial and reading skills. A sample of males and females volunteer to participate and are given 10 minutes to work on a 50-word puzzle. The number of words correctly recognized is recorded for each subject, and the resulting data are as follows:
| Males |
Females |
| 12 |
15 |
| 8 |
12 |
| 9 |
11 |
| 11 |
18 |
| 10 |
13 |
| 12 |
14 |
| 7 |
17 |
Conduct the appropriate analysis of these data and determine whether there are any significant differences.