Adults 21 and older volunteer from one to nine hours each week at a center for disabled senior citizens. The program recruits adult community college students, four-year college students, and nonstudents. The table below lists a sample of the volunteers, their number of hours per week, and the volunteer type.

Is the type of volunteer and the number of hours volunteered independent at the 0.05 level of significance?

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Comm. College Students 109 82 34 Four-Year College 115 123 28 Nonstudents 1-3 hours 4-6 hours 7-9 hours 138 47