 between two or three phase III trials for a normally distributed outcome — EPsProg23_normal"><meta name="description" content="The function EPsProg23_normal() calculates the expected probability of a successful program
with a normally distributed outcome. This function follows a special decision rule in order to determine
whether two or three phase III trials should be conducted. First, two phase III trials are performed. Depending
on their success, the decision for a third phase III trial is made:
If bo