Consider t

Problem #2

Pacific, Plumber and Placid Investment Company processes thousands of stock transactions each day at its headquarters in


Peoria
,

Illinois

. Each transaction passes through four steps and must be processed in order. The steps are the same for all transactions except for step 3. In 50% of the cases, transactions are processed only by an over-the counter (OTC) clerk, while the other 50% are processed only in the “normal” manner.