A professor grades students on four tests, a term paper, and a final examination. Each test counts as 15% of the course grade. The term paper counts as 20% of the course grade. The final examination counts as 20% of the course grade. Alan has test scores of 92, 86, 88, and 90. Alan received an 84 on his term paper. His final examination score was 88. Use the weighted mean formula to find Alan's average for the course.