FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 10: Quality Control

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 41

True/False

Review LaterAdd Note

Review Later

Run tests give managers an alternative to control charts; they are quicker and cost less.

A) True
B) False

Correct Answer

verified

Show Answer

Question 42

Multiple Choice

Review LaterAdd Note

Review Later

The number of runs up and down is:

A) 2
B) 3
C) 4
D) 5
E) none of these

F) None of the above
G) A) and B)

Correct Answer

verified

Show Answer

Question 43

Multiple Choice

Review LaterAdd Note

For upper and lower control limits of .026 and .014, which machine(s) , if any, appear(s) to be out-of-control for process proportion of defectives?

Run tests are useful in helping to identify nonrandom variations in a process.

If a point on a control chart falls outside one of the control limits, this suggests that the process output is non-random and should be investigated.

A time-ordered plot of representative sample statistics is called a:

Non-random variation is likely whenever all observations are between the LCL and UCL.

The greater the capability ratio, the higher the rejects.

What is the mean of the sampling distribution of sample means when service life is in control?

If the process is known to produce 11 percent defectives on average, what are the upper and lower control limits for an alpha risk of .10? .05? .01?

The optimum level of inspection is where the:

"Process capability" compares "process variability" to the "tolerances."

The basis for a statistical process control chart is a(the) __________.

A plot below the lower control limit on the range chart: (I) should be ignored since lower variation is desirable (II) may be an indication that process variation has decreased (III) should be investigated for assignable cause

A point which is outside of the lower control limit on an R-chart:

If the process is known to have a mean of 15 and a standard deviation of 3, what is the mean of the sampling distribution of sample means for whenever this process is under control? The standard deviation?

A c-chart is used for:

What are the x-bar chart three sigma upper and lower control limits?

Statistical process control focuses on the acceptability of process output.

If the process is known to have a mean of 15 and a standard deviation of 3, what are the three sigma upper and lower control limits for an x-bar chart?