Problems, Supply Chain Management

Assignment Help:
1- The smallest defect in a computer chip will render the entire chip worthless. Therefore, tight quality control measures must be established to monitor these chips. In the past, the percentage of defective for these chips has been 3%. The sample size is 100. Calculate the upper and lower control limits of a P-chart to monitor this process. Also determine whether the process is in control if a sample of 100 chips indicated 7 defectives.


2- Cool Technologies produces refrigeration units for food producers and retail food establishments. The overall average temperature that these units maintain is 49 ºF. The average range is 4 ºF. Samples of size 7 are taken to monitor the process. Calculate the control limits for X-bar and R charts. Also determine if the process is in control if the next sample taken results in 47, 48, 50, 52, 51, 57, and 56.


3- An electronic component has design specification limits of 215?25 mhz. Due to variation in the parts that goes into this component, the actual yield varies. A sample of 100 indicated a mean of 220 mhz and standard deviation of 7 mhz.

a- Find the Process Capability Index (Cpk) for this process. Is this process capable? Why?






b- Find the process capability if we adjust the process mean to 217 and reduce variability by 15%. Is this modified process capable? Why?












4- A random sample of 200 cars observed after paint jobs performed by robots indicated a total of 785 blemishes. Find the upper and lower control limits for a C-chart with alpha risk of 6% to monitor the number of blemishes per car. If a car has 10 blemishes, should any action be taken?



















5- - Sampling seven (n=7) pieces of precision-cut parts every hour for the past 14 hours has produced the following results.

Sample 1 2 3 4 5 6 7 8 9 10 11 12 13 14
X-bar 3.05 3.02 3.04 3.01 3.07 2.99 2.98 3.05 3.07 3.12 3.11 3.12 3.14 3.15
R 0.31 0.28 0.26 0.37 0.48 0.32 .23 0.37 0.32 0.56 0.71 0.79 0.88 0.92

a- Find the 3-sigma control limits for X-bar and R charts.










b- Draw the X-bar and R-charts and comment on the state of the process.


Related Discussions:- Problems

Supply chain management, Seamless Integration: Integration of new product ...

Seamless Integration: Integration of new product introductions or changes to existing products fully into the enterprise system also known as engineering change management is cruc

Design the internal operations of the depot, Supreme is a major supermarket...

Supreme is a major supermarket chain in Mauritius, with one central distribution depot. It is sited at the Upper Plaines Wilhems and handles all the normal range of products such a

Logistics, Discuss the logistics strategies

Discuss the logistics strategies

Lean operation, Catalytic converters are made in batches of 10 units and ar...

Catalytic converters are made in batches of 10 units and are moved in special hand carts to the fabrication cells. The catalytic converter cell is designed so that different types

Assignmentr, I need help in my assignment

I need help in my assignment

Explain the structure of supermarket supply chain, Explain the structure of...

Explain the structure of supermarket supply chain. Categorisation in the structure of supermarket supply chain - Farmers or primary producers, members of cooperative groups, Pr

Describe the principles of quality management systems, Question 1: Desc...

Question 1: Describe the several principles of Quality Management Systems. Describe Quality Management System Principles of Quality Management Systems Conclusion

Logistics, 1-what are distribution costs? 2- what are lost opportunity cost...

1-what are distribution costs? 2- what are lost opportunity costs? 3-what are ordering costs?

Modified atmosphere packaging, Modified Atmosphere Packaging: Modified ...

Modified Atmosphere Packaging: Modified atmosphere packaging (MAP) broadly defined any type of packaging system that attempted to modify the atmosphere inside the package to ex

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd