Aschool uses merit based pay for teachers. each teacher would be given a score between 1 (far below expectations) and 5 (exceeds expectations) in the following categories. the weight of each category is included. content knowledge (20%) lesson plans (15%) instruction delivery (20%) classroom management (15%) student performance (20%) supplementary responsibilities (10%) a teacher received the following scores. what was his weighted average? content knowledge = 4 lesson plans = 3 instruction delivery = 3 classroom management = 5 student performance = 4 supplementary responsibilities = 2 the teacher's weighted mean is