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weatherill
2002 Mar 22
0
sequential t-test - replies
...ith it, of course.
cheers Bob
Code follows ...
function(delta = 1, alpha = 0.05, beta = 0.05, minn = 1, maxn = 20, bot =
-10, top = 10)
{
# Create tables and graphs for Barnard's SPRT ("sequential
t-test")
# (a) uses expressions given in Wetherill & Glazebrook 'Sequential
Methods in Statistics', p 60
# (b) succesfully reproduces table L in OL Davies Design &
Analysis of Industrial Experiments'
#
# notation is a mixture of a and b.
#
# delta is the difference-to-detect ( in std dev...