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

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

Identify and discuss the primary and secondary activities in suply chain

Linear program to optimizes cost , Aerial Products has received a contract ...

Aerial Products has received a contract to construct airframes produced at a client's factory in Tennessee.  There are strict quality control measures in place for the airframes.

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

Material handling, what are the factors that affect materials handling

what are the factors that affect materials handling

Analysis assumptions explicitly, Steve Rothel was purchasing manager for th...

Steve Rothel was purchasing manager for the mid-west division of the Terpend Corporation. Shortly before his company was to install an exhaust system in a new construction project,

BASF, How has BASF''s differentiated supply chain models worked to leverage...

How has BASF''s differentiated supply chain models worked to leverage its economies of scale and extensive knowledge of its customers'' industries?

Supply chain quality control, Supply Chain Quality Control We are aware...

Supply Chain Quality Control We are aware that the global manufacturing industry consists of a matrix of suppliers and customers linked with complex demands. Supply chain inclu

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

Components of a supply chain management, Question: a) Distinguish betwe...

Question: a) Distinguish between a Venture capitalists and Internet Incubator . b) What are the components of a supply chain management? c) What is included in the develo

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