A Teacher Figures That Final Grades in the Chemistry Department

question 30

Essay

A teacher figures that final grades in the chemistry department are distributed as: A, 25 % ; B, 25 % ; C, 40 % ; D, 5 % ; F, 5 % . At the end of a randomly selected semester, the following number of grades were recorded. Determine if the grade distribution for the department is different than expected. Use α=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:

Equilibrium Wage

The wage rate at which the quantity of labor supplied equals the quantity of labor demanded in the market.

Efficiency Wage

A higher wage paid by employers to increase productivity by attracting better applicants, reducing turnover, and motivating employees.

Marginal Productivity

The additional output that is produced by adding one more unit of a factor of production, holding other factors constant.

Income Distribution

The way in which total income is divided among the population or different groups in an economy.