Abox measures 4 units by 2 1/2 units by 1 1/2 units. what is the greatest numberof cubes with a side length of 1/2 unit that canbe packed inside the box?

Calculate the mean value (expected value) of the following discrete variable x (10 points): x = 0, 1, 2, 3, 4, 5, 6 p(x) = 0.2, 0.2, 0.15, 0.15, 0.15, 0.1, 0.05