The function of F(t) does not have closed form in theory. Therefore a lot of tables were created and attached in old fashion text books. In Matlab you can use function normcdf() in the Statistics Toolbox to calculate F(t), for example: >> format long; >> normcdf(3,0,1) ans = 0.99865010196837 You can also use function qfunc() in the Communications Toolbox or funcion erf() to build up normcdf(). All these functions have simple relations.
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