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 38 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
Thanks for the timely response, appreciate it

ricroger

  • Member
  • Posts: 352
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

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.

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

(a) Chicken pox vesicles. (b) Chicken pox on back of young patient. (a) Chicken pox vesicles. (b) Chicken pox on back of young patient.
Tai chi walk along straight line. From tai chi stance, shift weight to the back leg and turn the ... Tai chi walk along straight line. From tai chi stance, shift weight to the back leg and turn the ...
Semireclining position. Back supported and placement of bolster under the knees. Semireclining position. Back supported and placement of bolster under the knees.
Secure drape under hip and top arm, and undrape back; stand in back at waist facing head. Apply ... Secure drape under hip and top arm, and undrape back; stand in back at waist facing head. Apply ...
Press the back muscles, using the palms or loose fists to apply compression. Do not hyperextend your ... Press the back muscles, using the palms or loose fists to apply compression. Do not hyperextend your ...
Sites of referred pain Sites of referred pain
Video: Alzheimer's Disease

For a complete list of videos, visit our video library