A Simple Random Sample of 64 Observations Was Taken from a Large

question 50

Multiple Choice

A simple random sample of 64 observations was taken from a large population. The sample mean and the standard deviation were determined to be 320 and 120 respectively. The standard error of the mean is

• A)1.875
• B)40
• C)5
• D)15

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Definitions:

GREs

Standardized tests that measure verbal reasoning, quantitative reasoning, and analytical writing skills, commonly required for graduate school admissions.

Test Content Area

Specific domains or topics covered by a test, reflecting the construct it is designed to measure.

Cognitive Ability

The skill to engage in sophisticated mental activities involving logic, memory, comprehension, and finding solutions.

SATs

Standardized tests widely used for college admissions in the United States, assessing reading, writing, and math skills.