This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: We randomly divide 200 volunteers with headaches into two groups who take identical-looking pills. ... (Read 2777 times)

mia

  • Hero Member
  • *****
  • Posts: 564
on: Aug 31, 2019
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
Stats: Modeling the World ¦ Bock, Velleman, De Veaux ¦ 4th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by mia on Aug 31, 2019

popopong

  • Sr. Member
  • ****
  • Posts: 307
Reply #1 on: Aug 31, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 39% of students answer this correctly


mia

  • Hero Member
  • *****
  • Posts: 564
Reply #2 on: Aug 31, 2019
TY


popopong

  • Sr. Member
  • ****
  • Posts: 307
Reply #3 on: Aug 31, 2019
You're welcome


RIVER RAWLE

  • Newbie
  • *
  • Posts: 1
Reply #4 on: Apr 1, 2020
thank you


Jessica Gilbert

  • Newbie
  • *
  • Posts: 1
Reply #5 on: Jan 13, 2021
Thank you!


Amy Cho

  • Newbie
  • *
  • Posts: 1
Reply #6 on: Mar 26, 2021
Thank you


Abrahim Baluch

  • Newbie
  • *
  • Posts: 1
Reply #7 on: Apr 9, 2021
Thank you


« previous next »
 

Did you know?

Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

A plot of trophic diversity across the major groups of organisms shows highest trophic diversity amo A plot of trophic diversity across the major groups of organisms shows highest trophic diversity amo
Proportions of the genetic and physical maps are similar but not identical Proportions of the genetic and physical maps are similar but not identical
Some common functional groups of biomolecules Some common functional groups of biomolecules
Functional Groups of Vitamin C Functional Groups of Vitamin C
U.S. Racial-Ethnic Groups U.S. Racial-Ethnic Groups
1.6 Organisms are made up of cells, each of which contains an identical set of genes. 1.6 Organisms are made up of cells, each of which contains an identical set of genes.
Video: Double Stranded DNA Molecule Animation

For a complete list of videos, visit our video library