143
$311.96
$310.88
$310.18
%
O $308.94
Figurę 2. Example 1 for Shift = 0.25.
For the medium process shift (Figurę 5), the optimal cost design ARL1 (58) can be almost doubled (111), with very smali change in ARL2 (1.77 to 1.99) for a cost increase of only 0.2%. The ARL1 can be raised to 209, with an ARL2 of 1.77 for a 2.8% cost increase.