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- Suppose that the
are drawn from a normal (Gaussian)
distribution of unknown mean and Standard Deviation.
- Define
- Under hypothesis (0), t follows a so-called t-distribution
with n-1 degrees of freedom.
.
- t would be Gaussian with unit standard deviation if
taken from theory---not from experiment.
Geoffrey Fox, Northeast Parallel Architectures Center at Syracuse University, gcf@npac.syr.edu