`(f-significance f-value numerator-dof denominator-dof #:one-tailed?)`procedurereturns the probability of

`f-value`for given`numerator-dof`and`denominator-dof`. The boolean keyword`#:one-tailed?`indicates if calculation is two-sided (the default) or not.> (f-significance 1.5 8 2) 0.920449812578091 > (f-significance 1.5 8 2 #:one-tailed? #t) 0.460224906289046