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

Author Question: 400 patients suffering from chronic back pain were randomly assigned to one of two groups. Over a ... (Read 130 times)

deesands

  • Hero Member
  • *****
  • Posts: 514
on: Jul 25, 2018
400 patients suffering from chronic back pain were randomly assigned to one of two groups. Over a four-month period, the first group received acupuncture treatments and the second group received a placebo.
 
  Patients who received acupuncture treatments improved more than those who received the placebo.
  A) Designed experiment B) Observational study

Question 2

A researcher wants to perform a hypothesis test to determine whether the mean length of marriages in California differs from the mean length of marriages in Texas. Identify the two populations for the proposed hypothesis test.
 
  A) Adults living in California and adults living in Texas
  B) Marriages in California and marriages in Texas
  C) Lengths of California marriages and lengths of Texas marriages
  D) Married men and married women


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Pariscourtney

  • Sr. Member
  • ****
  • Posts: 352
Reply #1 on: Jul 25, 2018
Answer to Question 1

A

Answer to Question 2

B


deesands

  • Member
  • Posts: 514
Reply 2 on: Jul 25, 2018
:D TYSM

laurnthompson

  • Member
  • Posts: 334
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

Did you know?

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

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Patients should be encouraged to bring to their health care visit all the substances that they take, Patients should be encouraged to bring to their health care visit all the substances that they take,
Chronic lymphedema. Chronic lymphedema.
Muscles of the right hand back view Muscles of the right hand back view
Back Back
EMS personnel respond to emergencies and transport patients to the hospital. EMS personnel respond to emergencies and transport patients to the hospital.
Suggested Antibiotic Prophylaxis Regimens in Patients at Potential Increased Risk of Hematogenous ... Suggested Antibiotic Prophylaxis Regimens in Patients at Potential Increased Risk of Hematogenous ...
Video: Forming urine ( influencing factors), Forming dilute urine & Forming concentrated urine

For a complete list of videos, visit our video library