18. The number of defects found in 25 samples of 100 Malossdientes Candy Company lemon drops taken on a daily basis from a production line over a five- week period is given in the worksheet Prob. 9-18. a. Compute dpmo and find the sigma level. b. Plot these data on a run chart. Can you identify any special causes?  C.  Explain what the Sigma Level means below:

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
icon
Related questions
Question

18. The number of defects found in 25 samples of 100 Malossdientes Candy Company lemon drops taken on a daily basis from a production line over a five- week period is given in the worksheet Prob. 9-18.

a. Compute dpmo and find the sigma level.

b. Plot these data on a run chart. Can you identify any special causes? 

C.  Explain what the Sigma Level means below:

**Title: Understanding Sigma Value Calculations in Quality Control**

---

### Calculation of Sigma Value

**Instructions:**

1. Click the yellow cell, then click on “ƒx” button above. Select “Statistical” from the dialog drop-down. Scroll down to find statistical selections. Find and select “NORM.S.INV.” dialog box will open. Type in the following info: “Probability text box: .99865).” Click OK. (See explanation to the right)
2. In the line level, type in the standard sigma shifts (.0845)
3. Sigma Level [value] will auto-calculate. Explain what the Sigma Level means.

---

**Data Entry Table:**

- **Number of Samples:** 25
- **Sample Values:**
  - Sample Numbers: 1 to 25
  - Defects: 6 (for samples 1-25)
  - Center: 5.98 (for samples 1-25)

---

### Explanation of Chart:

**Chart Type:**

- Line Chart

**Data Represented:**

- X-axis: Sample Numbers (1-25)
- Y-axis: Defect Counts

---

**Chart Description:**

- This chart compares the number of defects against the sample numbers.
- The blue line represents the actual number of defects encountered.
- The red line marks the center, which is a constant value of 5.98 across all sample numbers.
- The line graph shows fluctuations in defect numbers around the center value, with some peaks and troughs indicating variations over the 25 samples.

---

**Instructions for Analysis:**

- Analyze chart data; do not describe the chart.
- Analyze and explain what the chart data reveals.
- Incorporate analysis of data, and your response to the problem questions in the text, in a narrative format using the Report Template.

---

**Note:** 

The reason for using the equation is to identify the probability of finding a value between 1,000 and the distribution mean (0.99865 or 5.98).
Transcribed Image Text:**Title: Understanding Sigma Value Calculations in Quality Control** --- ### Calculation of Sigma Value **Instructions:** 1. Click the yellow cell, then click on “ƒx” button above. Select “Statistical” from the dialog drop-down. Scroll down to find statistical selections. Find and select “NORM.S.INV.” dialog box will open. Type in the following info: “Probability text box: .99865).” Click OK. (See explanation to the right) 2. In the line level, type in the standard sigma shifts (.0845) 3. Sigma Level [value] will auto-calculate. Explain what the Sigma Level means. --- **Data Entry Table:** - **Number of Samples:** 25 - **Sample Values:** - Sample Numbers: 1 to 25 - Defects: 6 (for samples 1-25) - Center: 5.98 (for samples 1-25) --- ### Explanation of Chart: **Chart Type:** - Line Chart **Data Represented:** - X-axis: Sample Numbers (1-25) - Y-axis: Defect Counts --- **Chart Description:** - This chart compares the number of defects against the sample numbers. - The blue line represents the actual number of defects encountered. - The red line marks the center, which is a constant value of 5.98 across all sample numbers. - The line graph shows fluctuations in defect numbers around the center value, with some peaks and troughs indicating variations over the 25 samples. --- **Instructions for Analysis:** - Analyze chart data; do not describe the chart. - Analyze and explain what the chart data reveals. - Incorporate analysis of data, and your response to the problem questions in the text, in a narrative format using the Report Template. --- **Note:** The reason for using the equation is to identify the probability of finding a value between 1,000 and the distribution mean (0.99865 or 5.98).
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 3 images

Blurred answer
Similar questions
Recommended textbooks for you
Practical Management Science
Practical Management Science
Operations Management
ISBN:
9781337406659
Author:
WINSTON, Wayne L.
Publisher:
Cengage,
Operations Management
Operations Management
Operations Management
ISBN:
9781259667473
Author:
William J Stevenson
Publisher:
McGraw-Hill Education
Operations and Supply Chain Management (Mcgraw-hi…
Operations and Supply Chain Management (Mcgraw-hi…
Operations Management
ISBN:
9781259666100
Author:
F. Robert Jacobs, Richard B Chase
Publisher:
McGraw-Hill Education
Business in Action
Business in Action
Operations Management
ISBN:
9780135198100
Author:
BOVEE
Publisher:
PEARSON CO
Purchasing and Supply Chain Management
Purchasing and Supply Chain Management
Operations Management
ISBN:
9781285869681
Author:
Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. Patterson
Publisher:
Cengage Learning
Production and Operations Analysis, Seventh Editi…
Production and Operations Analysis, Seventh Editi…
Operations Management
ISBN:
9781478623069
Author:
Steven Nahmias, Tava Lennon Olsen
Publisher:
Waveland Press, Inc.