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You decide to test the effectiveness using the drug and a

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Reference no: EM13645613

You decide to test the effectiveness using the drug and a placebo. You select a select a group of 500 subjects and randomly assign them to either the treatment group or the placebo group.

  1. Is this an observational study or a designed experiment? Explain
  2. What is the explanatory variable?
  3. What is the response variable?
  4. If this is an experiment, diagram the experiment.
  5. You decide to "double blind" the study. What does that mean?

Reference no: EM13645613

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