In Drug-Treatment Studies,double-Blind Procedures Minimize Outcome Differences Between Experimental and Control

question 303

Multiple Choice

In drug-treatment studies,double-blind procedures minimize outcome differences between experimental and control conditions that could be attributed to

• A) replication.
• B) operational definitions.
• C) random sampling.
• D) placebo effects.

---

Definitions:

Normal Approximations

The use of the normal distribution to approximate the distribution of sample statistics for large sample sizes, even if the data itself is not normally distributed.

Exact Probabilities

The precise likelihood, often computationally derived, of observing a particular outcome in a statistical experiment.

Sample Proportion

The ratio of members in a statistical sample who have a particular trait, relative to the total sample size.

Probability

The evaluation of the chances that an event takes place.