n​ Marissa's calculus​ course, attendance counts for 15​% of the​ grade, quizzes count for 15​% of the​ grade, exams count for 50​% of the​ grade, and the final exam counts for 20​% of the grade. Marissa had a 100​% average for​ attendance, 93​% for​ quizzes, 82​% for​ exams, and 81​% on the final. Determine​ Marissa's course average. ​Marissa's course average is nothing​%. ​(Type an integer or a decimal. Do not​ round.)

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Counting Principles

In statistics, the counting principle can be said to be the concept in which the quantity of an item is determined. There can be a single item, or a group of items, or items that are related to each other. In every possible set of items, the quantity of the possible item groups or their sorting measures can be determined with counting principles.