Print method for objects of class "halving" created
by the halving function.
# S3 method for class 'halving'
print(x, ...)An object of class "halving" (halving).
Additional arguments to be passed to print.
Currently only digits to be passed to signif for
appropriate rounding.
A print out of the PMF, expected testing expenditure and variance
of testing expenditure resulting from halving.