Perform an F test for the null hypothesis rr * b = r in a classical normal regression model y = X * b + e.
Under the null, the test statistic f follows an F distribution with df_num and df_den degrees of freedom.
The p-value (1 minus the CDF of this distribution at f) is returned in pval.
If not given explicitly, r = 0.
If no output argument is given, the p-value is displayed.
Package: statistics