Probability and Statistics assignment

Question 1: In a survey of 3381 adults, 1498 say they have started paying bills online in the last year. Construct a 99% confidence interval for the population proportion. Interpret the results.

Don't use plagiarized sources. Get Your Custom Essay on

Get a PLAGIARISM-FREE custom essay written for you!

Order Essay

Question 2: Translate the excerpt below into a confidence interval for p and approximate the value of the level of confidence, c.

In a survey of 8494 adults, 32.6% said they were taking vitamin E as a supplement. The survey’s margin of error is plus or minus 1%.

Question 3: A researcher wishes to estimate with 90% confidence, the population proportion of adults who think the president of their country can control the price of gas. Her estimate must be accurate within 1% of the true proportion.

(a) No preliminary estimate is available. Find the minimum sample size needed.

(b) find the minimum sample size needed using a prior study that found that 26% of the respondents said they think their president can control the price of gas.

Plagiarism Free Papers

All our papers are original and written from scratch. We will email you a plagiarism report alongside your completed paper once done.

Free Revisions

All papers are submitted ahead of time. We do this to allow you time to point out any area you would need revision on, and help you for free.

Free Title-page

A title page preceeds all your paper content. Here, you put all your personal information and this we give out for free.

Free Bibliography

Without a reference/bibliography page, any academic paper is incomplete and doesnt qualify for grading. We also offer this for free.

Originality & Security

At Homework Sharks, we take confidentiality seriously and all your personal information is stored safely and do not share it with third parties for any reasons whatsoever. Our work is original and we send plagiarism reports alongside every paper.

24/7 Customer Support

Our agents are online 24/7. Feel free to contact us through email or talk to our live agents.

Try it now!

Calculate the price of your order

Type of paper needed:

Pages:

Academic level:

We'll send you the first draft for approval by at

Total price:

$0.00

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Services

We work around the clock to see best customer experience.

Pricing

Flexible Pricing

Our prces are pocket friendly and you can do partial payments. When that is not enough, we have a free enquiry service.

Communication

Admission help & Client-Writer Contact

When you need to elaborate something further to your writer, we provide that button.

Deadlines

Paper Submission

We take deadlines seriously and our papers are submitted ahead of time. We are happy to assist you in case of any adjustments needed.

Reviews

Customer Feedback

Your feedback, good or bad is of great concern to us and we take it very seriously. We are, therefore, constantly adjusting our policies to ensure best customer/writer experience.