I'm very confused with the parameters used with Weibull to calculate the MTBF.
According to my course, we calculate the MTBF using :
MTBF = A * η + γ
where γ and η are calculated with a Weibull distribution (an excel sheet does that for me).
However, for the parameter A, I use this table, which seems to correspond to the values that are used in my course.
My question is : how are the values in the table calculated ? I cannot understand how I can calculate them manually if I needed to.
$\displaystyle A=\Gamma(1+\frac{1}{\beta})$