# Dealing in fabric quality | Mathematics homework help

Rayon whiteness is an important factor for scientists dealing in fabric quality. Whiteness is affected by pulp quality and other processing variables. Some of the variables include acid bath temperature, °C (x1); cascade acid concentration, % (x2); water temperature, °C (x3); sulfide concentration, % (x4); amount of chlorine bleach, lb/min (x5); and blanket finish temperature°C (x6). A set of data from rayon specimens is given here. The response, y, is the measure of whiteness.

 Y x1 x2 x3 x4 x5 x6 88.7 43 0.211 85 0.243 0.606 48 89.3 42 0.604 89 0.237 0.600 55 75.5 47 0.450 87 0.198 0.527 61 92.1 46 0.641 90 0.194 0.500 65 83.4 52 0.370 93 0.198 0.485 54 44.8 50 0.526 85 0.221 0.533 60 50.9 43 0.486 83 0.203 0.510 57 78.0 49 0.504 93 0.279 0.489 49 86.8 51 0.609 90 0.220 0.462 64 47.3 51 0.702 86 0.198 0.478 63 53.7 48 0.397 92 0.231 0.411 61 92.0 46 0.488 88 0.211 0.387 88 87.9 43 0.525 85 0.199 0.437 63 90.3 45 0.486 84 0.189 0.499 58 94.2 53 0.527 87 0.245 0.530 65 89.5 47 0.601 95 0.208 0.500 67

(a) Use the criteria MSECp, and PRESS to find the “best” model from among all subset models.

(b) Plot standardized residuals against and do a normal probability plot of residuals for the “best” model. Comment.

Basic features
• Free title page and bibliography
• Unlimited revisions
• Plagiarism-free guarantee
• Money-back guarantee
On-demand options
• Writer’s samples
• Part-by-part delivery
• Overnight delivery
• Copies of used sources
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.

### 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.

### 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.

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.

### 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.

## 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: