A Test of Spelling Ability Is Given to a Random

question 44

Essay

A test of spelling ability is given to a random sample of 10 students before and after they completed a spelling course.The mean score before the course was 119.60 and after the course the mean score was 130.80.The standard deviation of the difference was 16.061.Assume that the difference in scores is normally distributed.Calculate a 99% confidence interval for the mean change in score.

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Definitions:

Argument

A reasoned set of statements aimed at persuading someone of the truth or falsity of a concept.

Generalization

The method of creating broad ideas by identifying and extracting shared attributes from examples.

Positive Instance

An example or case that supports a theory or hypothesis.

Complete Enumeration

A method involving listing all possible members of a set to show a proposition's truth.