To Control for This Bias in Drug Studies, Participants Are

question 10

Multiple Choice

To control for this bias in drug studies, participants are kept blind as to whether they are receiving the active drug or placebo:

• A) personal
• B) observer
• C) expectancy
• D) placebo
• E) confounding

---

Definitions:

Sampling Error

The error that arises from using a sample to estimate a population parameter, due to the sample not perfectly representing the population.

Confidence Desired

The degree of certainty or level of confidence one desires in the results of a statistical analysis, often expressed as a percentage.

Confidence Interval

A range of values, derived from sample statistics, that is believed to contain the true population parameter with a certain probability level.

Sampling Error

The difference between a sample statistic and the corresponding population parameter due to the fact that the sample is not a perfect representation of the population.