User Account

All Pages

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

Analyse the stages of the procurement cycle, Problem 1: What do you mea...

Problem 1: What do you meant by the ‘Purchasing Function'? Describe some benefits accrued to a firm having an effective purchasing function? Problem 2: Purchasing Depar

Inventory control, brief of inventory control

brief of inventory control

Reducing and controlling errors of measurement, R educing and controlling ...

R educing and controlling errors of measurement To reduce and control errors for all sources of measurement variation steps can be taken. By applying a numerical connectio

Warehouse, introduction of materials handling

introduction of materials handling

Forecast, develop a method that will optimal ordering quanties so that we m...

develop a method that will optimal ordering quanties so that we maximize the gross profits and also take into account inventory costs, product cost and price markups

Explain the risks and advantages of global supply chain, Explain the risks ...

Explain the risks and advantages of Global Supply Chain Risks - 1. Supply side risks 2. Risks in international logistics 3. Demand side risks 4. Government regulations -

Explain principles of supply chain networks, Supply chains are really suppl...

Supply chains are really supply networks that move the products, money, information and services. Explain 5 critical roles of supply networks that a manager must manage f

Explain the structure of supermarket supply chain, Explain the structure of...

Explain the structure of supermarket supply chain. Categorisation in the structure of supermarket supply chain - Farmers or primary producers, members of cooperative groups, Pr

Cost, how to judge whether it is worth processing an order of $ 1,000 at a ...

how to judge whether it is worth processing an order of $ 1,000 at a gross margin of $ 200?

DIFFERENCE BETWEEN SUPPLY CHAIN AND VALUE CHAIN, WHAT IS THE DIFFERENCE BET...

WHAT IS THE DIFFERENCE BETWEEN SUPPLY CHAIN AND VALUE CHAIN

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd