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:

Fewer Resources

The state of having limited assets, funds, or materials to work with or utilize in a project, business, or operation.

Philanthropic Goodwill

The positive reputation and relationships a business builds through charitable actions, donations, or involvement in community services.

Internal Environment

The conditions, entities, events, and factors within an organization that influence its activities and choices, including its culture, employees, and management.

Green Marketing

Marketing efforts designed to promote products by emphasizing their environmental benefits or the environmental consciousness of the brand.