Is it possible that a process can be in statistical control but still not meet the customer's needs? Explain why or why not? Provide an example. A car wash services 200 customers in an hour on a lovely Saturday afternoon. The car wash employs 4 washers at $10 per hour and uses $50 of water and $5 of electricity per hour. They charge $15 per car for their standard wash job. Calculate the effect of each of these on the productivity? And identify which has the highest impact. Show your work/A) increasing their service rate so they can process 250 cars per hour. B) Cutting their employee by $1 per hour. C) Charging $11 per standard wash job. D) Introducing a new waterless system.