A clinical trial evaluated a new compound designed to improve wound healing in trauma patients ...

     A   clinical trial evaluated a new compound designed to improve wound healing in   trauma patients. The new compound was compared against a placebo. After   treatment for 5 days with the new compound or placebo, the extent of wound   healing was measured and the data is shown in Table 7-45. Is there a   difference in the extent of wound healing by treatment? Run the appropriate   test at a 5% level of significance. (Hint: Are treatment and the percent of   wound healing independent?) Table 7-45 Wound Healing by Treatment Treatment   Percent Wound Healing 0-25 % 26-50% 51-75% 76-100% New Compound 15 37 32 41   (n=125) Placebo 36 45 34 10 (n=125)