Chapter 8Global Warming  In April 2011, a Yale/George Mason poll of 1010 US adults found that 40% of the people responding believed that scientists disagreed about whether global warming exists.  They reported a 95% confidence interval of 37% to 43%.  What was the study’s margin of error?If the researchers  wanted to be 98% confident, would their confidence interval be wider or narrower?If the researcher wanted to reduce the margin of error, would they need to make their level of confidence higher or lower?If the researchers had polled more people, would the interval’s margin of error have been larger or smaller?MLB  In a sample of 30 current MLB pitchers, the mean age was 28 years with a standard deviation of 4.4 years.  Using StatCrunch, construct a 95% confidence interval to estimate the mean age of all current MLB pitchers.Give the interval, round values to 1 decimal place:___________________State the correct numerical values that would be in each of these numbered spots in this diagram of this confidence interval.Contributions Please  The Paralyzed Veterans of America is a philanthropic organization that relies on contributions.  They send free mailing labels and greeting cards to potential donors on their list and ask for a voluntary contribution.  To test a new campaign, they recently sent letters to a random sample of 100,000 potential donors on their mailing list and received 4781 donations.State the 95% confidence interval in correct conclusion sentence form for the true proportion of their entire mailing list who may donate.  Round values 3 decimal places.A staff member thinks that the true rate is 5.5%.  Given the confidence interval you found, do you find the staff member’s percentage plausible?  Explain why or why not.Chapter 9Living with Parents   Many young adults live at home with their parents due to various reasons, such as lack of income, postponing marriage, and saving money for school.  A recent survey reports that approximately 36% of all young adults (ages 18-31) live with their parents (Fry, 2013).  In order to check this claim, a random sample of 440 young adults was obtained and 183 of them were found to live with their parents. Is there sufficient evidence to conclude that the proportion of young adults who live at home with their parents is higher than the value the survey reported?  Use α = 0.01. What was the data that was collected in this problem?Is this quantitative data or qualitative data?State the value of the sample statistic rounded to 2 decimal places.State the value of the population parameter that is being tested in this problem.State the level of significance given in the problem.State the hypotheses using the correct statistical symbols.State the test statistic rounded to 2 decimal places.State the P-value rounded to 4 decimal places.What is the correct decision?In a complete sentence, indicate the strength of this P-value and give a conclusion using the SPECIFIC context of the problem that you are testing.  I should be able to read this conclusion sentence and know specifically what the test was about.

Don't use plagiarized sources. Get Your Custom Essay on
Just from $13/Page
Order Essay

What Will You Get?

We provide professional writing services to help you score straight A’s by submitting custom written assignments that mirror your guidelines.

Premium Quality

Get result-oriented writing and never worry about grades anymore. We follow the highest quality standards to make sure that you get perfect assignments.

Experienced Writers

Our writers have experience in dealing with papers of every educational level. You can surely rely on the expertise of our qualified professionals.

On-Time Delivery

Your deadline is our threshold for success and we take it very seriously. We make sure you receive your papers before your predefined time.

24/7 Customer Support

Someone from our customer support team is always here to respond to your questions. So, hit us up if you have got any ambiguity or concern.

Complete Confidentiality

Sit back and relax while we help you out with writing your papers. We have an ultimate policy for keeping your personal and order-related details a secret.

Authentic Sources

We assure you that your document will be thoroughly checked for plagiarism and grammatical errors as we use highly authentic and licit sources.

Moneyback Guarantee

Still reluctant about placing an order? Our 100% Moneyback Guarantee backs you up on rare occasions where you aren’t satisfied with the writing.

Order Tracking

You don’t have to wait for an update for hours; you can track the progress of your order any time you want. We share the status after each step.


Areas of Expertise

Although you can leverage our expertise for any writing task, we have a knack for creating flawless papers for the following document types.

Areas of Expertise

Although you can leverage our expertise for any writing task, we have a knack for creating flawless papers for the following document types.


Trusted Partner of 9650+ Students for Writing

From brainstorming your paper's outline to perfecting its grammar, we perform every step carefully to make your paper worthy of A grade.

Preferred Writer

Hire your preferred writer anytime. Simply specify if you want your preferred expert to write your paper and we’ll make that happen.

Grammar Check Report

Get an elaborate and authentic grammar check report with your work to have the grammar goodness sealed in your document.

One Page Summary

You can purchase this feature if you want our writers to sum up your paper in the form of a concise and well-articulated summary.

Plagiarism Report

You don’t have to worry about plagiarism anymore. Get a plagiarism report to certify the uniqueness of your work.

Free Features $66FREE

  • Most Qualified Writer $10FREE
  • Plagiarism Scan Report $10FREE
  • Unlimited Revisions $08FREE
  • Paper Formatting $05FREE
  • Cover Page $05FREE
  • Referencing & Bibliography $10FREE
  • Dedicated User Area $08FREE
  • 24/7 Order Tracking $05FREE
  • Periodic Email Alerts $05FREE

Our Services

Join us for the best experience while seeking writing assistance in your college life. A good grade is all you need to boost up your academic excellence and we are all about it.

  • On-time Delivery
  • 24/7 Order Tracking
  • Access to Authentic Sources
Academic Writing

We create perfect papers according to the guidelines.

Professional Editing

We seamlessly edit out errors from your papers.

Thorough Proofreading

We thoroughly read your final draft to identify errors.


Delegate Your Challenging Writing Tasks to Experienced Professionals

Work with ultimate peace of mind because we ensure that your academic work is our responsibility and your grades are a top concern for us!

Check Out Our Sample Work

Dedication. Quality. Commitment. Punctuality

All samples
Essay (any type)
Essay (any type)
The Value of a Nursing Degree
Undergrad. (yrs 3-4)
View this sample

It May Not Be Much, but It’s Honest Work!

Here is what we have achieved so far. These numbers are evidence that we go the extra mile to make your college journey successful.


Happy Clients


Words Written This Week


Ongoing Orders


Customer Satisfaction Rate

Process as Fine as Brewed Coffee

We have the most intuitive and minimalistic process so that you can easily place an order. Just follow a few steps to unlock success.

See How We Helped 9000+ Students Achieve Success


We Analyze Your Problem and Offer Customized Writing

We understand your guidelines first before delivering any writing service. You can discuss your writing needs and we will have them evaluated by our dedicated team.

  • Clear elicitation of your requirements.
  • Customized writing as per your needs.

We Mirror Your Guidelines to Deliver Quality Services

We write your papers in a standardized way. We complete your work in such a way that it turns out to be a perfect description of your guidelines.

  • Proactive analysis of your writing.
  • Active communication to understand requirements.

We Handle Your Writing Tasks to Ensure Excellent Grades

We promise you excellent grades and academic excellence that you always longed for. Our writers stay in touch with you via email.

  • Thorough research and analysis for every order.
  • Deliverance of reliable writing service to improve your grades.
Place an Order Start Chat Now

Order your essay today and save 30% with the discount code Happy