n​ Marissa's calculus​ course, attendance counts for 20​% of the​ grade, quizzes count for 15​% of the​ grade, exams count for 45​% of the​ grade, and the final exam counts for 20​% of the grade. Marissa had a 100​% average for​ attendance, 93​% for​ quizzes, 86​% for​ exams, and 85​% on the final. Determine​ Marissa's course average. ​Marissa's course average is 87.5587.55​%. ​(Type an integer or a decimal. Do not​ round.

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.