$1)$

A process with very low capability is one that:

Does not produce enough parts or services.

Has control charts with overly wide control limits$.$

Has overly wide specification limits$.$

Produces output that does not meet specifications.

Single choice

$2)$

If all of the processes are stable, which of the following processes is the most capable?

A

B

C

D

Single choice

$3)$

True or false: A process that is in statistical control also meets specifications.

True. Statistical control implies a capable process.

True. A process that is in statistical control is usually capable of meeting process specifications.

False. Statistical control does not imply a capable process.

False. A process that is in statistical control is usually not capable of meeting process specifications.

Single choice

$4)$

Which of these processes exhibits low capability because of excessive variability in the process data?

A

B

C

D

Single choice

$5)$

Which of the following is not true of specification limits$?$

The range of the specification limits is also called the tolerance.

Specification limits are determined by the process's performance.

Specification limits mark the upper or lower acceptable values for a part or service.

Specification limits can be negative numbers.

Single choice

$6)$

Which of the following is an assumption of all capability analyses?

The process is on target.

The process data are stable over time.

The process data are centered between the specification limits$.$

All of the above.

Single choice

$7)$

Normal capability assumes that the process data are modeled by the normal distribution. Which of the following methods can be used to check this assumption?

Probability plot

Histogram

Anderson$-$Darling test

All of the above

Single choice

$8)$

A hospital wants to study the capability of its check$-$in process. Shown are a control chart and normal probability plot of patient wait$-$time data. Is the data suitable for a normal capability analysis?

Yes. The process is stable over time, and the process data is modeled by the normal distribution.

No$.$ The process is not stable over time.

No$.$ The process data does not come from a normal distribution.

No$.$ The process is not stable over time, nor is the process data modeled by the normal distribution.

Single choice

$9)$

An engineer wants to study the capability of a filling machine. Shown are a control chart and a normal probability plot of container fill$-$volume data. Is her data suitable for a normal capability analysis?

Yes. The process is stable over time, and the process data is modeled by the normal distribution.

No$.$ The process is modeled by the normal distribution, but it is out of control.

No$.$ The process is in control, but not modeled by the normal distribution.

No$.$ The process is not stable over time, nor is the process data modeled by the normal distribution.

Single choice

$10)$

An accountant wants to study the capability of a billing process. Shown are a histogram and a control chart of customer bill$-$payment times. Is his process data suitable for a normal capability analysis?

Yes. The process is stable over time, and the process data is modeled by the normal distribution.

No$.$ The process is not stable over time.

No$.$ The process data is not modeled by the normal distribution.

No$.$ The process is not stable over time, nor is the process data modeled by the normal distribution.