Solve the Problem. -The Scores on a Certain Test Are Normally Distributed with Normally

question 121

Multiple Choice

Solve the problem.
-The scores on a certain test are normally distributed with a mean score of 51 and a standard deviation of 2. What is the probability that a sample of 90 students will have a mean score of at least 51.2108?

• A)0.1587
• B)0.3174
• C)0.3413
• D)0.8413

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Definitions:

Stanford Achievement Test

A standardized test used primarily in the education sector to assess students' knowledge in various subject areas.

Reliability

The degree to which an assessment tool produces stable and consistent results over time.

Validity

Refers to the degree to which a test accurately measures what it is intended to measure.

Survey Battery

A comprehensive set of surveys aimed to assess various dimensions of an individual's attitudes, beliefs, or behaviors.