The following data was collected in a clinical trial evaluating a new compound designed to improve...

The following data was collected in a clinical trial evaluating a new compound designed to improve wound healing in trauma patients. The new compound is compared against a placebo. After treatment for 5 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 Compound (n=125)	15	37	32	41
Placebo (n=125)	36	45	34	10

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.

a. Set up hypotheses and determine level of significance

b. Set up decision rule

c. Compute the test statistic

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Expert Solution

orchestra answered 1 year ago

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