A Random Sample of 25 Statistics Examinations Was Selected

question 56

Multiple Choice

A random sample of 25 statistics examinations was selected. The average score in the sample was 76 with a variance of 144. Assuming the scores are normally distributed, the 99% confidence interval for the population average examination score is _____.

• A) 70.02 to 81.98
• B) 69.82 to 82.18
• C) 70.06 to 81.94
• D) 69.29 to 82.71

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Definitions:

Hippocampus

is a brain structure integral to memory formation and spatial navigation.

Social-cognitive Perspective

A view in psychology that focuses on how people process, store, and apply information about others and social situations.

Learned Helplessness

A condition in which a person suffers from a sense of powerlessness, arising from a traumatic event or persistent failure to succeed, and is characterized by giving up effort, even when opportunities for change are available.

Vulnerable

A state of being open to harm, damage, or attack, either physically or emotionally.