Answer
The graph of X is positively skewed while the graph of Y is negatively skewed.
The graph of X is skewed to the right while the graph of Y is skewed to the left.
Work Step by Step
When you plot the graphs in problem 2.8, you can see that, for X, most of the values are on the lower end of the spectrum, and there are some higher points. The mean of the distribution in X is also greater than the median of the distribution in X. On the other hand, most of the values for Y are on the higher end of the spectrum, and there are some lower points. The mean of the distribution in Y is less than the median of the distribution in Y.
