(Optional) Redo Exercise S11, but assume that the probability that BMA is low cost is 0.6. (Optional) Repeat Exercise S11, but assume that a low-cost BMA has a per-unit cost of 0.2, and a high-cost...

(Optional) Redo Exercise S11, but assume that the probability that BMA is low cost is 0.6.

(Optional) Repeat Exercise S11, but assume that a low-cost BMA has a per-unit cost of 0.2, and a high-cost BMA has a per-unit cost of 0.38. Let the probability that BMA is low cost be 0.4.