Final answer:
The question deals with the calculation of percentages in Mathematics, by setting up equivalent fractions to understand the proportion of students receiving a particular grade, and applying this concept to various statistical analyses.
Step-by-step explanation:
The question involves understanding and calculating percentages, which is a fundamental concept in Mathematics. In the context provided, 8.88% of students receive a grade of A. To calculate percentages or understand what they represent, one commonly used method is to set up equivalent fractions, where one fraction has a denominator of 100. Cross-multiplication can then determine the percentage.
For instance, if we use the given information about Mr. Ahab's class, where 3 out of 40 students received A grades, we express it as a fraction f/n, which equals 3/40, and then convert it to a percentage. By multiplying the resulting fraction by 100, we obtain 7.5%, meaning 7.5% of the students achieved grades between 90 to 100 percent.
Understanding and applying this methodology can also assist in statistical interpretations, like predicting grades, analyzing grade distributions, or determining the confidence level for a population mean or proportion, as seen in other examples provided.