Continue to select pairs, keeping track of the cumulative number of successes for each treatment.

Stop the trial as soon as the number of successes for one treatment exceeds that for the other by  2.

This would complete one trial. Now repeat this whole process until you have results for at least 20 trials [more is better].

Finally, use the simulation results to estimate the desired probabilities.)

a. What is the probability that more than five pairs must be treated before a conclusion can be reached?

(Hint: P(more than 5) 5 1 2 P(5 or fewer).)

b. What is the probability that the researchers will incorrectly conclude that Treatment 2 is the better treatment?