A Teacher Figures That Final Grades in the Statistics Department $$x ^ { 2 }$$

Multiple Choice

A teacher figures 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 number of grades were recorded. Calculate
The chi-square test statistic χ $$x ^ { 2 }$$ to determine if the grade distribution for the department is different than
Expected. $$\begin{array} { l | l l l l l } \text { Grade } & \text { A } & \text { B } & \text { C } & \text { D } & \text { F } \\\hline \text { Number } & 36 & 42 & 60 & 8 & 14\end{array}$$

A) 5.25
B) 6.87
C) 3.41
D) 4.82