Recent Posts • Latest Topics • Unanswered Questions

We randomly divide 200 volunteers with headaches into two groups who take identical-looking pills. ...

SPP24

wrote...

Go to Answer

Posts: 454

Rep:

4 years ago

We randomly divide 200 volunteers with headaches into two groups who take identical-looking pills. ...

We randomly divide 200 volunteers with headaches into two groups who take identical-looking pills. One group gets a homeopathic remedy and the other a placebo. After 20 minutes we ask them to rate their headache pain as "no change", "somewhat better", "much better", or "gone". What is the appropriate test?

▸ 2-proportion z-test

▸ χ² test of homogeneity

▸ 2-sample t-test

▸ matched pairs t-test

▸ χ² test of independence

Textbook

Stats: Modeling the World

Edition: 4^th

Authors: Bock, Velleman, De Veaux

Read 289 times

1 Reply

Report

Replies

Answer verified by a subject expert

mace

wrote...

Posts: 383

Rep:

4 years ago

More solutions for this book are available here

Report

Related Topics

SPP24 Author

wrote...

4 years ago

Correct

Brownr40

wrote...

Yesterday

This helped my grade so much Perfect

rene_ram97

wrote...

2 hours ago

I appreciate what you did here, answered it right Smiling Face with Open Mouth

New Topic

Quick Reply

Explore

Post your homework questions and get free online help from our incredible volunteers

1018 People Browsing

112 Signed Up Today

Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook

Live Chat

Related Images

941

242

898

Your Opinion

Previous poll results: Should Ph.D.'s be addressed as doctors?

The Toxic Skin and Fungi Defense

Courses by Biology Forums

Bonobos, Chimpanzees, and the 98% DNA Link

It's sore throat season, why does my mucus have red spots?

Strange Ingredients Lurking in Doritos Chips

Ready to ask a question on Biology Forums? Try it out

Join Our Community

Biology Forums - Study Force is a free online homework help service catered towards college and high school students. Get homework help and answers to your toughest questions in biology, chemistry, physics, mathematics, engineering, accounting, business, humanities, and more. Master your assignments quickly with thousands of step-by-step solutions to countless textbook questions asked and answered by our members. If we don't have your question, don't worry. You can ask any homework question and get expert homework help in as little as two hours.

Our extensive online study community is made up of college and high school students, teachers, professors, parents and subject enthusiasts who contribute to our vast collection of study resources: textbook solutions, study guides, practice tests, practice problems, lecture notes, equation sheets and more. With our help, your homework will never be the same!

Join for free today

How is Biology Forums - Study Force different than tutoring?

Home Search Q & A Board Gallery Resource Library Blog Dictionary Chat	Quick Links Start a Topic Latest Topics Unanswered Questions Courses Study Tools Browse by Textbook	Social Facebook YouTube Community Stats Who's Online Trending Staff	Help About Us Take the Tour Study Tips Posting Guidelines Terms and Policies Contact Us
Biology Forums - Study Force © 2010-2024 \| Powered by SMF \| SMF © 2015, Simple Machines \| Sitemap Biology-Forums.com is not affiliated with any publisher. Book covers, title and author names appear for reference only.