A Random Sample Is One in Which

question 44

Multiple Choice

A random sample is one in which

• A) each group of the population is represented equally
• B) the unit of sampling is a naturally occurring group of individuals
• C) every member of the population has an equal and independent chance of being selected
• D) the research results are statistically significant

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Definitions:

Null Hypothesis

Proposes that a prediction made from a given theory is false. Experiments (and other research strategies) are set up not to prove the worth of a theory, but rather to reject (or fail to reject) the null hypothesis. Thus, theories gain in strength because alternative explanations are rejected.

Experiment

A scientific procedure in which variables are manipulated and the effects on other variables are gauged. Large groups of subjects are generally used, and the results are analyzed statistically. In a true experiment, subjects are randomly assigned to experimental and control groups.

Rejection Hypothesis

The theory proposing that the experience of rejection, or anticipated rejection, by significant others or society can lead to negative psychological outcomes.

Test Hypothesis

The process of conducting a scientific test to confirm or refute a hypothesis, typically involving controlled experiments or observations.