One hundred draws are made at random with replacement from the box 1, 2, 3, 4, 5, 6. a) if the sum of the draws is 321, what is their average b) if the average of the draws is 3.78, what is the sum? c) estimate the chance that the average of the draws is between 3 and 4

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min