The following data was collected in a clinical trial evaluating a new medication designed to improve wound healing in trauma patients.The new compound is compared against a placebo.After treatment for 10 days with the new compound or placebo the extent of wound healing is measured and the data are shown below.

Percent Wound Healing

Treatment 0-25% 26-50% 51-75% 76-100%

New psoriasis medication (n=125) 14 38 33 40

Placebo (n=125) 36 43 35 11

Is there a difference in the extent of wound healing by treatment?(Hint:Are treatment and the percent wound healing independent?)Run the appropriate test at a 5% level of significance.