A Test of Spelling Ability Is Given to a Random $\alpha$

question 3

Multiple Choice

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.What do you conclude at $\alpha$ = .01?

• A)No evidence of a difference
• B)Significant difference in the scores

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Definitions:

Interviews

A method of gathering information through direct conversation, often used for research or employment selection.

Statistical Process Control

The use of statistical methods to monitor and control a process to ensure that it operates at its full potential to produce conforming product.

Performance Output

The measurable results or outputs that come from an individual's or organization's efforts, often used as a basis for evaluation or comparison.

Variations

Refers to differences or deviations in characteristics, outcomes, or occurrences within a group or between groups.