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 quality planning, Supply Chain Quality Planning Structurin...

Supply Chain Quality Planning Structuring the supply chain requires an understanding of the request patterns, service level requirements, distance considerations, cost elements

Case Study: TehJava, I have a case study about Tehjava, which is a Tea busi...

I have a case study about Tehjava, which is a Tea business in indonesia. I need to know what will be the price for 1500words and include relevant diagrams and references.

Error proofing, Find three examples within your transformation process wher...

Find three examples within your transformation process where it is possible to make an error resulting in defective output. 1) Identify what warning signs indicated a potential

Discussion Questions, Based on your own research on the use of e-commerce/e...

Based on your own research on the use of e-commerce/e-procurement in the public and private sectors, what are those elements that you consider to be unique to each? How would yo

Dicuss main driving and resisting force, Explain: (i)   Background to or...

Explain: (i)   Background to organization (one page max) (ii)  Analyse the organization situation by conducting a force field analysis (a)  dicuss main driving force (b

Assigment, This is the guideline for my research project, Please send me yo...

This is the guideline for my research project, Please send me your Quotes against my 4 assignments as per below subjects and attached documents -Company Description in 3,500 wo

Raw Materials Planning, what are some theories that would support on my re...

what are some theories that would support on my research study?

Western Pharmaceuticals A B, what should the case fill rate be for each pro...

what should the case fill rate be for each product given the current uncertainty levels and order quantities and how does the calculated aggregate case fill rate fill rate differ f

The expected profit for blockbuster, A  movie studio sells  the latest movi...

A  movie studio sells  the latest movie on DVD to Blockbuster at $10 per DVD.  The marginal production cost for the movie studio is $1 per DVD.  Blockbuster prices each DVD at $20

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