A Teacher Finds That Final Grades in the Statistics Department $\alpha = 0.01$

question 59

Essay

A teacher finds that final grades in the statistics department are distributed as: A, 25%; B, 25%; C, 40%; D, 5%; F, 5%. At the end of a randomly selected semester, the following grades were recorded. Determine if the grade distribution for the department is different than expected. Use $\alpha = 0.01$ $$\begin{array} { l | c c c c c } \text { Grade } & \text { A } & \text { B } & \text { C } & \text { D } & \text { F } \\\hline \text { Number } & 36 & 42 & 60 & 14 & 8\end{array}$$

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Definitions:

Turbinates

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Kiesselbach Plexus

A network of blood vessels located in the anterior part of the nasal septum, a common site of nosebleeds.

Rheumatic Fever

An inflammatory disease that can develop as a complication of inadequately treated strep throat or scarlet fever, affecting the heart, joints, skin, and brain.

Scarlet Fever

An infectious disease characterized by a red rash, high fever, and sore throat, caused by certain strains of streptococcal bacteria.