A Teacher Finds That Final Grades in the Statistics Department $25 \% ; \mathrm { C } , 40 \%$

question 37

Essay

A teacher finds that final grades in the statistics department are distributed as: A, 25\%; B, $25 \% ; \mathrm { C } , 40 \%$ ; 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 $\alpha = 0.01$ .
$\begin{array}{l|lllll}\text { Grade } & \text { A } & \text { B } & \text { C } & \text { D } & \text { F } \\\hline \text { Number } & 36 & 42 & 60 & 8 & 14\end{array}$

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Definitions:

Amygdala

A part of the brain involved in emotion regulation, emotional learning, and forming memories associated with emotional events.

Nucleus Accumbens

A region in the brain's forebrain that plays a central role in the reward circuit, associated with pleasure, reinforcement learning, and addiction.

Dopamine

Dopamine is a neurotransmitter involved in regulating mood, cognition, reward, and pleasure, among other functions.

Basolateral Nucleus

A region of the amygdala involved in memory consolidation and emotional responses, influencing both arousal and the processing of sensory information.