Confidence interval | Statistics homework help

  

Initial Post: Assuming .05 as your alpha value, make up a problem similar to this one below. (Make up 36 gas prices for your example – be sure they are similar to the prices you have had in your area.)  List the values in your post.

In your response, describe what you did and give the mean, standard deviation and confidence interval.

Example below:

  • First find the      mean. List all 36 gas prices in cells A1 to A36 in your excel spreadsheet.
  • On a different      cell type in =average(A1:A36) and the hit enter to find the average
  • Assume your      answer is 2.65
  • On a different      cell type in =stdev.s(A1:A36) or =stdevA(A1:A36) and      enter to find the standard deviation
  • Assume your      answer is .43
  • Then type this      in an excel cell =confidence(.05,.43,36) and hit enter.      This is the E value
  • So take the mean      of 2.65 and you have (2.65-E, 2.65+E) for your confidence interval

Formula you used above for the confidence interval:

The formula is E= zsubc * sigma / sqrt n

Where the left-hand endpoint is xbar – E and the right-hand endpoint is xbar + E

The above is an example. Please come up with something similar. Keep the answer separate please

Calculate Your Essay Price
(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