A Biology Professor Claimed That the Proportions of Grades in His

question 21

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. $$\begin{array} { | l | c | c | c | c | c | } \hline \text { Grade } & \text { A } & \text { B } & \text { C } & \text { D } & \text { F } \\\hline \text { Frequency } & 14 & 23 & 27 & 26 & 10 \\\hline\end{array}$$ Do the data provide enough evidence to support the professor's claim?

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Definitions:

Hair Color

An attribute or variable often studied in genetics or sociology, reflecting the pigment of hair on individuals.

Sample

A segment of the broader population selected for analysis, assessment, or interrogation to obtain information that reflects the characteristics of the entire population.

Nominal

Relating to data that can be categorized but not ranked; involves naming or labeling categories.

Interval

A range or distance between two points or values, often referring to time or space.