# Question 2 of 2 -/15 View Policies Current Attempt in Progress Arandom sample of 1500 residential…

Question 2 of 2 -/15 View Policies Current Attempt in Progress Arandom sample of 1500 residential telephones in Phoenix found that 380 of the numbers were unlisted. A random sample in the same year of 1200 telephones in Scottsdale found that 315 were unlisted. Round your answers to four decimal places (e.g.98.7654). (a) Calculate a 95% two-sided confidence interval on the difference in the proportions of unlisted numbers between the two cities. Sp1-p2s (b) Is there a significant difference between the two proportions at a = 0.05? (c) Calculate a 90% two-sided confidence interval on the difference in the proportions of unlisted numbers between the two cities. Sp1-p2s Statistical Tables and Charts e Textbook and Media Save for Later Attempts: 0 of 3 used Submit Answer

## 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:
Number of pages
Urgency
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.