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1) it is thought by some researchers that exercise for college students is related to the sex of the student. A survey was taken of 470 college students in California that relates their sex to the frequency of exercise per week. The resufts ar summarized in the contingency table below. No exercise per week Once or twice per week More than twice per week Totals Male 88 76 58 222 Female 72 85 91 248 Totals 160 161 149 470 k What proportion of the students surveyed exercise at least once per week? . E 470 ,, es 470 w m 470 ha i\" None of the above