Author Question: In a study of the death rates of smokers and nonsmokers in three countries, it is found that the ... (Read 78 times)

geoffrey

  • Hero Member
  • *****
  • Posts: 880
In a study of the death rates of smokers and nonsmokers in three countries, it is found that the nonsmokers have higher death rates than the smokers.
 
  What technique could be used to address difficulties with the sampling units that produced this unusual result?
  a. There is no technique available to address it
   b. subclassification on propensity scores
   c. time series design
   d. lagged correlations

Question 2

In situations where one must work with intact groups but where there are also ethical implications concerning depriving both groups of the benefits of the experimental treatment, one uses a randomized design with a __________ control group.
 
  a. zero
  b. preexperimental
  c. wait-list
  d. placebo



tuwy

  • Sr. Member
  • ****
  • Posts: 336
Answer to Question 1

b

Answer to Question 2

c



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

For a complete list of videos, visit our video library