Chapter 11, Problem 56E

Shingles A research doctor has discovered a new ointment that she believes will be more effective than the current medication in the treatment of shingles (a painful skin rash). Eight patients have volunteered to participate in the initial trials of this ointment. You are the statistician hired as a consultant to help design an experiment.

1. a) Describe how you will conduct this experiment.
2. b) Suppose the eight patients’ last names start with the letters A to H. Using the random numbers listed below, show which patients you will assign to each treatment. Explain your randomization procedure clearly.

41098

18329

78458

31685

55259

1. c) Can you make this experiment double-blind? How?
2. d) The initial experiment revealed that males and females may respond differently to the ointment. Further testing of the drug’s effectiveness is now planned, and many patients have volunteered. What changes in your first design, if any, would you make for this second stage of testing?