Exam 7: Inventory Management

A hotel tracks the number of complaints per month. When the process is in control, there is an average of 35 complaints per month. Assume that a 2- sigma control limit is used. The next four months have 33, 27, 29, and 43 complaints. What should management do?

The central line on a p- chart is 0.50 with an UCL of 0.65 and a LCL of 0.35. The results of the next six samples are 0.60, 0.37, 0.45, 0.48, 0.53, and 0.62. What should you do?

Once a process is in statistical control, SPC techniques detect the onset of assignable causes of variation so that they can be eliminated.

A new product has been designed with three modules. Extensive testing of each module resulted in the following reliabilities: 0.999, 0.998, and 0.995. What is the reliability of the product?

______ costs result from defects that are discovered during the production of a product or service.

Continuous improvement is a philosophy that

A company is interested in monitoring the number of scratches on Plexiglas panels. The appropriate control chart to use would be

Working with suppliers to increase the quality of purchased items used to produce a product would be categorized as a prevention cost of quality.

For a high- technology product, the lifespan of the product before it begins to deteriorate or no longer functions at an acceptable level is considered the basic performance dimension of quality.

Historically, the average time to service a customer complaint has been 3 days and the standard deviation has been 0.50 day. Management would like to specify the control limits for an X- chart with a sample size of 10 and 3 sigma limits. Suppose the next sample of 10 yielded the following result: 3.2, 2.1, 3.6, 2.8, 3.9, 3.5, 2.7, 4.1, 2.6, and 3.3. What conclusion can be drawn?

The International Standard ISO 26000:2010 produced a guidance document for social responsibility.

Four samples of 100 each were taken from an assembly line, with the following results: Using the historical average as the central line of the chart, which one of the following is the limits for an attributes control chart with z = 2? Sample Number Number Defective 1 6 2 12 3 2

A hotel tracks the number of complaints per month. When the process is in control, there is an average of 35 complaints per month. Assume that a 2- sigma control limit is used. What is the lower control limit?

Process capability determines whether a process is capable of producing the product or services that customers demand.

Deming argued that 85% of quality problems could be directly attributed to employees based on mistakes made by not following the instructions of management.

Historically, the average proportion of defective bars has been 0.015. Samples will be of 100 bars each. Construct a p- chart using z = 3. Suppose a sample had 0.07 defective. What would you do?

What is the plan- do- check- act cycle? (also referred to as the Deming Wheel)

Historically, the average time to service a customer complaint has been 3 days and the standard deviation has been 0.50 day. Management would like to specify the control limits for an X- chart with a sample size of 10 and 3 sigma limits. The UCL for the chart would be ---

A company is interested in monitoring the variability in the weight of the fertilizer bags it produces. An appropriate control chart would be

Which one of the following is a consequence of internal failures?