Condition on age. Refer to the previous exercise.

(a) For each age group compute the percent of students who are full-time and the percent of students who are part-time.

(b) Make a graphical display of the results that you found in part (a).

(c) In a short paragraph, describe the relationship between age and full- or part-time status using your numerical and graphical summaries.

(d) Explain why you need only the percents of students who are full-time for your summary in part (b).

(e) Compare this way of summarizing the relationship between these two variables with what you presented in part

(c) of the previous exercise.