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

What is pestle analysis, Question 1: Explain the need for category managem...

Question 1: Explain the need for category management - Adds strategic value - Optimizes supplier relationship - Cultivates sustainable relationships with suppliers - S

Pricing Problem, Your job is to develop a prenegotiation position for all c...

Your job is to develop a prenegotiation position for all cost elements with explanations. Available information includes program information, a cost proposal, DCAS and DCAA reports

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

Topical paper, where can I get good reliable information to write a paper o...

where can I get good reliable information to write a paper on supply chain management ?

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

What are the different methods for evaluating inventory cost, Q. What are t...

Q. What are the different methods for evaluating inventory cost? i. FIFO method ii. Average cost method iii. LIFO method iv. Actual cost method v. Base stock prices

Annual Inventory Costs, Harley Davidson purchases components from three sup...

Harley Davidson purchases components from three suppliers. Components purchased from Supplier A are priced at $ 5 each and used at the rate of 240,000 units per year. Components pu

Components of a supply chain management, a) With the help of a diagram expl...

a) With the help of a diagram explain the architecture of an e-business application. b) What is an affiliate and how an Affiliate Program Works? c) Distinguish between Pay-pe

Eoq model, #question Tom Rich and Joe Miser have an e-checking/savings acc...

#question Tom Rich and Joe Miser have an e-checking/savings account at the eKU bank. Both Tom and Joe had $5000 in their account at the start of the calendar year 2013. Both have

Examine the fundamental dimensions of customer service, Question 1 What do...

Question 1 What do you mean by warehousing and What are the attributes of Ideal Warehousing? Question 2 Examine the fundamental dimensions of customer service Ques

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