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

Calculate the costs for the existing supply chain , The Logistics Director ...

The Logistics Director of a retailer based in the UK has asked for your advice. The Logistics Director works for a company that purchases a range of household furnishing product

Channels of distribution for the different types of goods, Describe how neg...

Describe how negotiations with suppliers are conducted to obtain goods and services at accepted costs. What are the channels of distribution for the different types of goods?

Show the benefits of the diversification strategy, The history of Mauritius...

The history of Mauritius is closely linked with the cultivation of sugarcane. Despite the fact that Mauritius has evolved from an agricultural-based economy to a services-based eco

Discuss in detail the reasons for bullwhip effect, Discuss in detail the re...

Discuss in detail the reasons for bullwhip effect? Demand forecasting Lead time  • Batch ordering  • Price fluctuation Inflated orders

Concept of supply chain management and definition, Question 1: Supply c...

Question 1: Supply chain management encompasses the planning and management of all activities involved in sourcing, conversion, procurement, and logistics management. Explain.

Logistics, Identify and discuss the primary and secondary activities in sup...

Identify and discuss the primary and secondary activities in suply chain

What is temperature controlled supply chain, Describe the importance of tem...

Describe the importance of temperature controlled supply chains. Require for Temperature controlled supply chains. Importance of temperature controlled food supply chain - Qual

Transportation, Add a dummy supply source to make it a balanced problem. Us...

Add a dummy supply source to make it a balanced problem. Use the least cost method and determine a shipping schedule and total cost of transportation

Research paper, I have to submit a research paper this Saturday about a pr...

I have to submit a research paper this Saturday about a problem in managing global supply chains from the real business world (from work or from any business articles/cases). It h

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