Qualtiy control problems | Mathematics homework help

QUALTIY CONTROL PROBLEMS

Don't use plagiarized sources. Get Your Custom Essay on
Qualtiy control problems | Mathematics homework help
Just from $13/Page
Order Essay

 

1.      System Reliability

A system is composed of five components in series, and each has a reliability of 0.96.

a)     What is reliability of the series system?                   

 

If the system can changed to parallel arrangement with all five components,

 

b)    What is reliability of the parallel system?                

 

c)     What is the change in the reliability?                               

 

2.     Failure Rate

In a failure rate test of a particular medical device, 10 items are set for a 60-h run. During the test run, 3 items failed at 25, 27, and 35 h.

a)     Determine the failure rate?

 

 

b)    Consider the test continued till 80-h run. Each time a part was failed, it was replaced by another one. In addition to the 3 failure (above described), two more devices failed during the next 20-h run.  Determine the failure rate by the end of 80 hours?

 

c) Determine the mean life of above two failure rate determined in (1.a) and (1.b)

 

         

3. Machine Failure Analysis

What is the reliability of an engine at 5000 hour if the failure pattern of the machine follows Weibull distribution with shape parameter, β = 1.4. The mean life of machine during the early failure (at debugging) phase is 6260 hours.   

Hints:

                  

         

4.     Probability

Binomial Distribution

Using the binomial distribution, find the probability of obtaining 2 or more nonconforming units when sampling 5 computers from a batch known to be 6% nonconforming.

Hints: use P(d) = n!/[d!(n-d)!]  pd q(n-d) formula

a)     Find  d = 1 and 2  i.e., the value for P(1) and P(2).

 

 

b)    P(1) = n!/[1!(n-1)!]  p1 q(n-1) {also replace n with a total number}

 

 

c)     P(2 or more) = P(T) – P(0) – P(1), where P(T) = 1

 

 

 

Place your order
(550 words)

Approximate price: $22

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
$26
The price is based on these factors:
Academic level
Number of pages
Urgency
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more

Order your essay today and save 15% with the discount code LOCKDOWN