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

Global recessions, In 2008, the world economy experienced so-called global ...

In 2008, the world economy experienced so-called global recessions, sharp falls in income and rapid increases in unemployment. a. Briefly summarize the main causes for the globa

Stages of strategic quality management process, Question 1: Show the ob...

Question 1: Show the objectives of strategic quality management. Describe the stages of strategic quality management process. Meaning of Strategic Quality Management

Kenya transport system, benefits of intergrating outbound and inbound movem...

benefits of intergrating outbound and inbound movement of goods in company

Green logistics, what is the procedure for greening an enterprise

what is the procedure for greening an enterprise

Business law:, What are 10 demerit of delagated legislature

What are 10 demerit of delagated legislature

Cranfield reliable stationary, Designing a Distribution Centre Cranfield R...

Designing a Distribution Centre Cranfield Reliable Stationery (CRS) National Fulfilment Centre

Case study "special salmon'', how do you expect your customers the restaura...

how do you expect your customers the restaurants to react to change to extranet?

Briefly explain main stages of a typical procurement cycle, Problem 1: ...

Problem 1: (a) Briefly explain the main stages of a typical procurement cycle. (b) Discuss four methods of dealing effectively with low value orders. Problem 2: J

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