The owner of a dry cleaning business studied the number of dry-cleaned items that were returned for rework per day for a 4-week period (Mon-Sat). The results are given below. Complete (a) through (c). Time Items Returned tems Returned Time Items Returned 10 4 3 1 2 6 10 4 16- 13 14 15 12 Time www.a 4 5 24 5 9 16 17 5 10 6 6 7 10 5 18 19 20 10 10 9 a. Construct a c chart for the items per day that are returned for rework. Do you think that the process is in a state of statistical control? Choose the correct chart below. O A. O B. 8 6 tems Returned 16- 9 8 Full data set 10 11 12 6 5 7 21 22 23 24 9 9 12 5 12 Time 24 G O C. WANT 12 Time 24 Q

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question
The owner of a dry cleaning business studied the number of dry-cleaned items that were returned for rework per day for a 4-week period (Mon-Sat). The results are given below. Complete (a) through (c).

| Time             | 1  | 2  | 3  | 4  | 5  | 6  | 7  | 8  | 9  | 10 | 11 | 12 |
|------------------|----|----|----|----|----|----|----|----|----|----|----|----|
| Items Returned   | 6  | 10 | 4  | 5  | 9  | 10 | 5  | 6  | 6  | 5  | 7  |    |
| Time             | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 |
| Items Returned   | 10 | 4  | 5  | 10 | 6  | 9  | 10 | 5  | 9  | 9  | 12 |    |

Do you think that the process is in a state of statistical control?
- **A.** Yes. There do not appear to be special causes of variation.
- **B.** No. There is a discernable pattern.
- **C.** No. There is at least one point outside the control limits.
- **D.** No. There are eight consecutive points all above or all below the center line.
Transcribed Image Text:The owner of a dry cleaning business studied the number of dry-cleaned items that were returned for rework per day for a 4-week period (Mon-Sat). The results are given below. Complete (a) through (c). | Time | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |------------------|----|----|----|----|----|----|----|----|----|----|----|----| | Items Returned | 6 | 10 | 4 | 5 | 9 | 10 | 5 | 6 | 6 | 5 | 7 | | | Time | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | | Items Returned | 10 | 4 | 5 | 10 | 6 | 9 | 10 | 5 | 9 | 9 | 12 | | Do you think that the process is in a state of statistical control? - **A.** Yes. There do not appear to be special causes of variation. - **B.** No. There is a discernable pattern. - **C.** No. There is at least one point outside the control limits. - **D.** No. There are eight consecutive points all above or all below the center line.
The owner of a dry cleaning business studied the number of dry-cleaned items that were returned for rework per day for a 4-week period (Mon-Sat). The results are given below. Complete (a) through (c).

```
| Time             | 1 |  2 |  3 |  4 |  5 |  6 |  7 |  8 |  9 | 10 | 11 | 12 |
|------------------|---|----|----|----|----|----|----|----|----|----|----|----|
| Items Returned   | 6 | 10 |  4 |  5 |  9 | 10 |  5 |  8 |  6 |  5 |  6 |  7 |

| Time             | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 |
|------------------|----|----|----|----|----|----|----|----|----|----|----|----|
| Items Returned   | 10 |  4 |  5 | 10 |  6 |  9 | 10 | 10 |  5 |  9 |  9 | 12 |
```

a. Construct a c chart for the items per day that are returned for rework. Do you think that the process is in a state of statistical control? Choose the correct chart below.

- Option A: The chart shows data points mostly clustered within the control limits, but with some deviations outside.
- Option B: The chart presents data points closely following the center line, with no points outside the control limits.
- Option C: The chart exhibits variations, with multiple points outside the upper control limit.

Explanation of the graph:

Each graph (A, B, and C) is a c chart displaying "Items Returned" on the y-axis against "Time" on the x-axis numbered from 0 to 24. The line graph shows plotted data points with blue lines connecting them. Each chart includes a centerline (CL) and upper (UCL) and lower control limits (LCL), marked with red lines. The presence of outliers, or lack thereof, indicates if the process is within statistical control.
Transcribed Image Text:The owner of a dry cleaning business studied the number of dry-cleaned items that were returned for rework per day for a 4-week period (Mon-Sat). The results are given below. Complete (a) through (c). ``` | Time | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |------------------|---|----|----|----|----|----|----|----|----|----|----|----| | Items Returned | 6 | 10 | 4 | 5 | 9 | 10 | 5 | 8 | 6 | 5 | 6 | 7 | | Time | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | |------------------|----|----|----|----|----|----|----|----|----|----|----|----| | Items Returned | 10 | 4 | 5 | 10 | 6 | 9 | 10 | 10 | 5 | 9 | 9 | 12 | ``` a. Construct a c chart for the items per day that are returned for rework. Do you think that the process is in a state of statistical control? Choose the correct chart below. - Option A: The chart shows data points mostly clustered within the control limits, but with some deviations outside. - Option B: The chart presents data points closely following the center line, with no points outside the control limits. - Option C: The chart exhibits variations, with multiple points outside the upper control limit. Explanation of the graph: Each graph (A, B, and C) is a c chart displaying "Items Returned" on the y-axis against "Time" on the x-axis numbered from 0 to 24. The line graph shows plotted data points with blue lines connecting them. Each chart includes a centerline (CL) and upper (UCL) and lower control limits (LCL), marked with red lines. The presence of outliers, or lack thereof, indicates if the process is within statistical control.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps with 1 images

Blurred answer
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman