Oppgave 1 (Part 1): Exam 20 nov 2006, Oppg
3
Oppgave 2 (Part 2): Exam 20 nov 2006, Oppg 5
Oppgave 3 (Part 3): Exam 6 des 2005, Oppg 1
Oppgave 4 (Part 4)
In a sequential design with k looks at the
data, there are different approaches for setting the significance level at look
number 1,2,…k. For each of these 4 approaches,
explain short the principle used, and the advantage(s) and drawback(s) of the
approach:
Naïve
Pocock procedure
Haybrittle-Peto
O’Brien-Fleming