Chapter 17: Problem 3
An exam is given in a certain class. The average (arithmetic mean) of the highest score and the lowest score on the exam is equal to \(x\). If the average score for the entire class is equal to \(y\) and there are \(z\) students in the class, where \(z>5,\) then in terms of \(x, y,\) and \(z,\) what is the average score for the class, excluding the highest and lowest scores? A. $$\frac{z y-2 x}{z}$$ B. $$\frac{z y-2}{z}$$ C. $$\frac{z x-y}{z-2}$$ D. $$\frac{z y-2 x}{z-2}$$ E. $$\frac{z y-x}{z+2}$$
Short Answer
Step by step solution
Key Concepts
These are the key concepts you need to understand to accurately answer the question.