A Biology Professor Claimed That the Proportions of Grades in His

question 32

Essay

A biology professor claimed that the proportions of grades in his classes are the same. A sample of 100 students showed the following frequencies. $$\begin{array} { | l | c | c | c | c | c | } \hline \text { Grade } & \text { A } & \text { B } & \text { C } & \text { D } & \text { F } \\\hline \text { Frequency } & 14 & 23 & 27 & 26 & 10 \\\hline\end{array}$$ Determine the rejection region at the 5% significance level.

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Definitions:

Case Study

A research method involving an up-close, in-depth, and detailed examination of a subject of study (the case), as well as its related contextual conditions.

Acquiring Language

The process by which humans learn to communicate through understanding and producing language, typically occurring in early childhood.

Human Language

A complex system of communication that uses syntax, semantics, and phonetics to convey meaning and express a vast array of ideas and emotions.

Convenience Sample

A sampling technique where participants are selected based on their availability and willingness to take part.