1) A process is capable if only common variation is present in the process.

True

False

2) Random variation is also referred to as uncontrollable variation.

True 

False

3) Control charts are used to determine whether a process will produce a product or service with consistent measurable properties..

True 

False

4) Two items in parallel having a reliability of 0.90  have an overall system reliability of 0.81..

True

False

5) The lower control limit for a p-chart can be lower than 0.

True

False

6) Process stability means that the variation observed in the process is nonrandom.

True 

False

7) A process capability of 2.00 or higher is Six Sigma.

True 

False

8) Processes that achieve capability indexes of 1.25 are world-class capable.

True

 False

9) It is not possible to be in control on the X-bar chart and out of control on the R-chart for the same process at the same time

True 

False

10)  In a capable process the specification limits are inside the control limits.

True 

 False

B. Please answer the following multiple choice questions (each worth 3 points)):

1. A system is to be composed of 5 identical components in series.  What is the lowest reliability component that can be used in order to have an overall system reliability of 0.90?

A. 0.98

B. 0.97

C. 0.96

D. 0.95

E. 0.94

2. _________  allows customers  and suppliers to tie their systems together to enhance planning, and purchasing, and coordination.  

A. EDI

B. CRM

C. MRP

D. PERT

E. CPM

3. Reliability models assume statistical independence between failure events.  This means:

A. components do not fail

B. if one component fails, the entire system fails

C. parallel systems are unnecessary

D. the failure of one component does not influence another to fail

E. series systems are unnecessary

4. There are three main ingredients to an audit.  These are auditing procedures, auditing principles, and:

A. auditing standards

B. auditing budgets

C. auditing outcomes

D. auditing routines

E. auditing events

5. Which of the following is true of nonrandom variation?.

A)  It is uncontrollable.

B)  It is centered on a mean.

C)  It occurs with a somewhat consistent amount of dispersion.

D)  It results from a shift in a process mean or some unexpected occurrence.

E) It results in a process that is easy to control.

6. The Six in Six Sigma refers to the ________.

A.  number of standard deviations from a specification limit to the mean of a highly capable process

B. number of means from a specification limit to the standard deviation of a highly capable process

C. number of variances from a specification limit to the mean of a highly capable process

D.  number of means from a specification limit to the variances of a highly capable process

E) number of means from zero of a highly capable process

7. Off line experimentation is performed during the ________ phase of Six Sigma.

A. control

B. improve

C. analysis

D. identification

E. variation

8. What is the Taguchi constant for a device that costs $400 to repair and a tolerance of plus or minus 0.5 mm with a mean squared deviation from the target of 0.3?

A. 144

B. 480

C. 4444

D. 1600

E. 1111

K= 400/.5^2  =   1600

L = 1600 x (.3) =   $480

9. Which of the following is an example of statistic based on an attribute?

A. s (standard deviation)

B. R (range)

C. P (proportion defective)

D. MR (moving range)

E. X bar (process population average)

10. The   X bar chart is a process chart used to monitor the ________ of the characteristic being measured.

A) range

B) average

C) mode

D) median

E) standard deviation