Question

At Jim’s Gym, there is a box containing six 5-pound dumbbells and two 10-pound dumbbells. A weightlifter randomly selects two dumbbells from the box.
What is the expected total weight of the two dumbbells selected?
A) 14.25 pounds D) 12.5 pounds B) 17.5 pounds E) 7.375 pounds C) 16.75 pounds N) none of the above

Answer 1

EV = SUM x*p(x)

Answer 2

The correct answer is 12.5