Original cost $150,000 $70,000 Useful life in years 10 5 Current age in years 5 0 The difference between keeping the old machine and replacing the old machine is

In terms of the "great wheel of science", statistics are central to the research process (a) only between the hypothesis phase and the observation phase (b) only between the observation phase and the empirical generalization phase (c) only between the theory phase and the hypothesis phase (d) only between the empirical generalization phase and the theory phase