Let the correlation coefficient between X and Y be 0.6. Random variables Z and W are defined as Z = X + 5 and W = Y/3. What is the correlation coefficient between Z and W?

A survey of 850 students in a University yields that 680 students like music and…

Let [x] denote the greatest integer function. What is the number of solutions of the…

What is C(n, r) + 2C(n, r – 1) + C(n, r – 2) equal…

Consider the following statements: 1. cosθ + secθ can never be equal to 1.5. 2.…

What is the number of triangles that can be formed by choosing the vertices from…