A Random Sample of 20 Items Is Selected from a Population

question 32

Multiple Choice

A random sample of 20 items is selected from a population. When computing a confidence interval for the population mean,what number of degrees of freedom should be used to determine the appropriate t-value?

• A)20
• B)19
• C)21
• D)25

Recognize the significance of reporting findings and the common methods of dissemination in scientific research.

Acknowledge the limitations of common sense in explaining behaviors and the value of scientific investigation.

Understand the distinction between objective and projective personality tests.

Identify the most commonly used and researched personality tests.

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Definitions:

Fatigue

A subjective feeling of tiredness which is distinct from weakness, and has a gradual onset.

Anxiety

A feeling of worry, nervousness, or unease, often about an imminent event or something with an uncertain outcome.

Depression

A common and serious mood disorder that negatively affects how you feel, think, and handle daily activities, often characterized by persistent feelings of sadness and loss of interest.

Future Loss

The potential for an individual or entity to experience a decrease in value or benefit in the future.