Minitab Assignment 1: Statistical Analysis of Paint Hardness for Engineering – Report

When the cured samples are available for testing, your team measures each sample set for hardness and records this data in Minitab in a column called Response.

The team also captures some additional data, such as the curing temperature of the sample and the operator that performed the data capture.

Worksheet

Deliverables

• Construct a formal Minitab report for your manager. Include background details of the test and a formal conclusion (in non-technical language).
• Perform initial basic statistical analysis of the data – generate comparison statistics and comparison charts and comment on these.
• Conduct a 95% Confidence Hypothesis Test to test the hypothesis that the four paint blends have similar means or different means.
• Provide a recommendation to your manager with the blend of paint that your testing has identified as being the ‘hardest’, supported by statistical evidence.
• Recommend a second-best blend in case the first blend is not available or too expensive. Again, support your recommendation with statistical analysis.
• The industry standard for the hardness of the paint is 20. Confirm whether both of your recommendations can achieve that standard using a 95% Confidence Hypothesis Test.
• Include the following in your report:
  • TUS Cover Page
  • Table of Contents
  • Introduction / Background (the purpose of the test)
  • Analysis
  • Conclusions
  • Recommendations
  • Next Steps
  • Page Numbers
  • Appendix (if necessary)

Note:

• Minitab can split a worksheet into new individual worksheets by a certain column. Go to Data – Split Worksheet and enter the Column name.
• Minitab can take a subset of a worksheet to create a new worksheet. Go to Data – Subset Worksheet.

Data Table