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Construct a 95% confidence interval for the population mean, Assume the population has a normal distribution. A sample of 20 college students had mean annual earnings of $3120 with a standard deviation of
$677.
Personality Test
A questionnaire or other standardized instrument designed to reveal aspects of an individual's character or psychological makeup.
Achievement Test
An assessment intended to measure a person's knowledge, skills, or proficiency in a certain area, often used in educational settings.
Intelligence Test
A standardized test designed to measure human intelligence and cognitive abilities.
Achievement Test
An examination that measures a person's skills or knowledge in a specific area or discipline.
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