A? student\'s course grade is based on one midterm that counts as 10?% of his fi
ID: 2946267 • Letter: A
Question
A? student's course grade is based on one midterm that counts as 10?% of his final? grade, one class project that counts as 5?% of his final? grade, a set of homework assignments that counts as 45?% of his final? grade, and a final exam that counts as 40?% of his final grade. His midterm score is 60?, his project score is 98?, his homework score is 80?, and his final exam score is 64. What is his overall final? score? What letter grade did he earn? (A, B,? C, D, or? F)? Assume that a mean of 90 or above is an? A, a mean of at least 80 but less than 90 is a? B, and so on.
Explanation / Answer
Overall final score=midterm score x w1+project score x w2+homework score x w3+final exam score x w4,
where, w1, w2, w3, w4>0 and w1+w2+w3+w4=1,
According to the problem, w1=0.1, w2=0.05, w3=0.45, w4=0.4
Overall final score=60x0.1+98x0.05+80x0.45+64x0.4=72.5=73
He obtains Grade C