A Statistics Professor Posted the Following Grade Distribution Guidelines for His

question 139

Essay

A statistics professor posted the following grade distribution guidelines for his elementary statistics class: 8% A, 35% B, 40% C, 12% D, and 5% F. A sample of 100 elementary statistics grades at the end of last semester showed 12 As, 30 Bs, 35 Cs, 15 Ds, and 8 Fs. Test at the 5% significance level to determine whether the actual grades deviate significantly from the posted grade distribution guidelines.

---

Definitions:

Economical

Characterized by efficiency and avoidance of waste, in terms of both cost and resources.

Successful MRP Use

Refers to the effective application of Material Requirements Planning, a system for planning production and inventory control, to ensure timely availability of materials while minimizing inventory costs.

Materials Plan

A comprehensive strategy for managing the procurement, storage, and use of materials needed in the manufacturing process.

Record Integrity

Ensuring that records are accurate, consistent, and maintained in such a way that their completeness and original state are preserved over time.