The Grades of a Sample of 10 Students, Selected at Random

question 108

Short Answer

The grades of a sample of 10 students, selected at random from a large population, are 71, 86, 75, 63, 92, 70, 81, 59, 80, and 90.
Compute the sample variance.
______________
Construct a 90% confidence interval estimate for the population variance.
______________
Construct a 90% confidence interval estimate for the population standard deviation.
______________
Can we infer at the 90% confidence that the population variance is significantly less than 100?
Test statistic = ______________
Critical Value(s) = ______________
Conclusion: ______________
Interpretation: __________________________________________

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Definitions:

Organizations

Entities composed of individuals and resources, structured to achieve specific goals through a collective effort.

Bureaucratic Control System

A formal system of organization based on clearly defined hierarchical levels and roles, focused on following rules and procedures to manage operations.

Organizational Culture

The collective values, beliefs, and principles of organizational members which give an organization its unique character.

Participative Organizational Culture

A workplace environment where decision-making is shared among employees at all levels, encouraging collaboration and collective ownership of outcomes.