A Private School Promoted Itself by Advertising That Its Graduates

question 17

Essay

A private school promoted itself by advertising that its graduates had an average SAT verbal score of 550 (with a standard deviation of 100). At the end of the school year the Parent-Teacher Association (PTA)decided to test this contention and obtained the SAT verbal scores for 80 graduating seniors. Their average score was 532. What should the PTA conclude in regard to the school's claim if a .05 level of significance is used?
a. Use the five steps of hypothesis testing.
b. Sketch the distributions involved.
c. Figure the confidence limits for the 95% confidence interval.

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Definitions:

Hierarchical Network Models

Theories suggesting that concepts are represented in the brain in a structured network of relationships, with more general concepts at the top and specific instances beneath.

Classical Approach

usually refers to traditional methods or theories in various fields, relying on established practices and principles that have been validated over time through consistent application and success.

Necessary

Required to be done, achieved, or present; needed; essential.

Sufficient Features

Characteristics or aspects of something that are enough to define, categorize, or identify it distinctly.