A Biology Professor Claimed That the Proportions of Grades in His

question 71

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:

Total Revenue

The overall income obtained by an enterprise from its sales or services within a designated period.

Marginal Revenue

The extra revenue gained by selling an additional unit of a product or service.

Total Revenue

The total amount of money a company receives from sales of its products or services, before any expenses are subtracted.

Total Revenue

The total income generated by a firm from its sales of goods or services, calculated as the unit price times the quantity sold.