INSTRUCTIONS

This is an independent assignment and is to be completed alone. ALL questions should have a written final answer. Response should be one or two sentences long and should describe what your results tell us about the question (e.g. don’t just tell me whether the null hypothesis was rejected or not – tell me what it means in the context of this question). You may write with pencil and paper or type your solutions. Make sure solutions are nice and neat.

Statistical Analysis Course.

1. Are the Radiation effects the same for men and women? Among 2,739 female atom bomb survivors, 1,397 developed thyroid diseases. Among 1,352 male atom bomb survivors, 436 developed thyroid diseases. Use a 0.01 significance level to test the claim that the female survivors and male survivors have different rates of thyroid diseases.

a) State the Null and Alternative Hypotheses and define which variable is represented by μ1 and μ2.

b) State which test statistic we should use. (Don’t worry about verifying that we’ve met all the requirements to use that test statistic – just assume we can).

c) What are the critical value(s)? Sketch a graph and label the critical points.

d) Calculate the calculated test statistic.

e) Do we reject the null hypothesis? Why or why not? Explain.

f) In the context of this question, what does our answer to part e mean? (For example, if we reject the null hypothesis, what does this mean about the daily travel expenses?)

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

Inferences About Two Samples

From as low as $9/Page

2. Scientists collect a simple random sample of 25 menthol cigarettes and 25 nonmenthol cigarettes. Both samples consist of cigarettes that are filtered, 100 mm long and non-light.

The menthol cigarettes have a mean nicotine amount of 0.87 mg and a standard deviation of 0.24 mg. The nonmenthol cigarettes have a mean nicotine amount of 0.92 mg and a standard deviation of 0.25 mg. Use a 0.05 significance level to test the claim that menthol

cigarettes and nonmenthol cigarettes have different amounts of nicotine. Does menthol appear to have an effect on the nicotine content?

a) State the Null and Alternative Hypotheses and define which variable is represented by μ1 and μ2.

b) State which test statistic we should use. (Don’t worry about verifying that we’ve met all the requirements to use that test statistic – just assume we can).

c) What are the critical value(s)? Sketch a graph and label the critical points.

d) Calculate the calculated test statistic. Explain.

f) In the context of this question, what does our answer to part e mean? (For example, if we reject the null hypothesis, what does this mean about the daily travel expenses?)

3. Does your body temperature change during the day? Listed below are body temperatures (in °F) of subjects measured at 8:00 am and at 12:00 am. Construct a 95% confidence interval estimate of the difference between the 8:00 am temperatures and the 12:00 am temperatures. Is body temperature basically the same at both times?

8:00 am 97.0 96.2 97.6 96.4 97.8 99.2

12:00 am 98.0 98.6 98.8 98.0 98.6 97.6

a) Calculate the value of the margin of the error E.

b) Construct the confidence interval.

c) Interpret the results found in part b.

d) In the context of this question, what does our answer to part c mean? What does this mean about the body temperature? For more information on Inferences About Two Samples check out : https://www.youtube.com/watch?v=86ss6qOTfts

Our Advantages

Plagiarism Free Papers

Thehomeworkwritings.com’s team of writers write all papers from scratch. We deliver 100% original, unique papers. That’s what makes us the best custom homework writing service

Free Revisions

We provide unlimited free revisions to all customers and on all papers. Try The Homework Writings today for the best custom homework writing service and experience in the industry.

Title-page

Thehomeworkwritings.com gives clients title pages free of charge. Your only job is to fill out our order form. We will handle the rest.

Bibliography

As the leading essay writing service, we never submit any paper without a reference/bibliography page. We do this free of charge too.

Originality & Security

At Thehomeworkwritings.com, we take great pride in delivering only high-quality 100% original papers to all our clients. We also never share any of our clients’ information with third parties. Your data is safe with us.

24/7 Customer Support

No other custom homework writing service has a friendly, always available customer support team to respond to clients like us.

Try it now!

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.

Why outsource our services

We have the best customer support team for your essay writing needs.

Pricing

You won’t find any other custom homework writing service with pricing as flexible and affordable as ours.

Communication

Admission help & Client-Writer Contact

We provide a direct line of communication with our writers for the best writing experience.

Deadlines

Paper Submission

As the leading custom homework writing service, we take deadlines very seriously. You will have your paper submitted on time without any delays.

Reviews

Customer Feedback

We truly value your feedback, good or bad, and always use your feedback to help us provide you with an even better custom homework writing service