You are the Research Director of a biotechnology company that is developing a new treatment for lung cancer. You need to demonstrate that your new drug Clear2020 is superior to the existing agent OldDrug in increasing life expectancy in both men and women in the age range 20 to 80. It is estimated that you will need to dose at least 400 patients with each drug in order to generate sufficient power in the study. (a) Explain how you would design this oncology study and what elements of experimental design would be important. [15 Marks] (b) Explain why each design element that you have incorporated is important. [18 Marks] [Total 33 Marks]

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