The documentation for math::statistics::test-normal says it returns 1 if the data is distributed normally within the given confidence.
I am not a statistician, but either I am severely confused or this is completely wrong.  It seems that this procedure returns 1 when the null hypothesis of a normal distribution should be rejected, which is the opposite of what I read.

Also, the confidence specification seems backwards from the things I read---which admittedly are just Wikipedia and MATLAB help---which use significance (alpha), a small number, rather than confidence.  In fact, I don't even think confidence is the right word here, or at least I don't think you're talking about confidence intervals.

package require math::statstics
0.6

"Confidence" is not the correct word indeed, it is not about confidence intervals. I have tried to get a clearer idea about how to perform the test, but it is confusing :(.

To be continued.