Final answer:
Percentage Composition refers to how much a part makes up of the whole and is used to calculate exam scores and the study of mixtures. To find the percentage, divide the part by the whole and multiply by 100. Probability questions and grading rubrics utilize this concept to assess student performance and the likelihood of specific outcomes.
Step-by-step explanation:
The concept of Percentage Composition is fundamental in various aspects of academics, including Mathematics and Chemistry. It outlines the proportional make-up of a component within a mixture or a result within a context. For instance, when a student gets 96 questions correct out of a 100-question exam, they score 96 out of 100, or 96%. The percentage is calculated by dividing the obtained score by the total possible score and then multiplying by 100 to express it as a percentage.
In another scenario provided as Solution 2.21, seventy percent of students answering 16 or fewer questions correctly is a statistical interpretation of performance data. Similarly, the probability question, numbered 93, asks for the chances of a student guessing correctly on more than 75 percent of the 32-question multiple choice exam, where each question has three possible answer choices.
To maintain quality responses across all submissions, a Grading Rubric is used to assess the completeness, accuracy, and presentation of answers. This acts as a guideline to ensure standards are met and provides a clear framework for both grading and expectations in academic work.