Exam 7: Process Strategies

The tool that calculates which process has the lowest cost at any specified production volume is a crossover chart.

A city police chief decides to do an annual review of the police department by checking the number of monthly complaints. If the total number of complaints in each of the 12 months were 15, 18, 13, 12, 16, 20, 5, 10, 9, 11, 8, and 3 and the police chief wants a 90% confidence level, are the complaints in control?

The statistical definition of Six Sigma allows for 3.4 defects per million. This is achieved by what C_pk index value?

The ________ is a quality control chart used to control the number of defects per unit of output.

Kirstin is thinking about opening an Italian restaurant and needs to buy a dough maker. Machine A has fixed costs of $300 and variable costs of $1/pound. Machine B has fixed costs of $1000 and variable costs of $0.30/pound. What is the crossover point? For 500 pounds of dough, which machine is better?

Arnold Palmer Hospital uses which focus?

Why is Harley-Davidson identified as a repetitive manufacturer, not a mass customizer?

Brandon's computer shop is considering two different configuration options. The first one is to have each computer built by the sales associates when they have free time. The second option is to hire a dedicated assembly technician. Option A has variable costs of $50 per computer and no fixed costs. Option B has a fixed cost of $1,000 but variable costs of only $10 per computer. What is the crossover point?

The number of defects after a hotel room cleaning (sheets not straight, smears on mirror, missed debris on carpet, etc.) should be measured using what type of control chart?

Why do range charts exist? Aren't x-bar charts enough?

To set x-bar chart upper and lower control limits, one must know the process central line, which is the:

What is acceptance sampling?

A hospital-billing auditor has been inspecting patient bills. While almost all bills contain some errors, the auditor is looking now for large errors (errors in excess of $250). Each day last week, the auditor examined 200 bills and found an average defect rate of 16%. Calculate the upper and lower limits for the billing process for 99.73% confidence.

If the process average is in control, then the process range must also be in control.

What do the terms producer's risk and consumer's risk mean?

How are modules useful in manufacturing processes?

The specification for a plastic liner for concrete highway projects calls for a thickness of 6.0 mm ± 0.1 mm. The standard deviation of the process is estimated to be 0.02 mm. What are the upper and lower specification limits for this product? The process is known to operate at a mean thickness of 6.03 mm. What is the C_p and C_pk for this process? About what percent of all units of this liner will meet specifications?

Identify the five major tools of process analysis and design. Describe them in a sentence or two each.

Some degree of variability is present in almost all processes.

Which of the following is NOT one of the strategies for improving service productivity?