The number of units expected to be sold is uniformly distributed between 300 and 500. If r is a random number between 0 and 1, then the proper expression for sales is D. 300 + r(200).
Uniform distribution means that there is a constant probability. There is a constant density in how the sales will trend when using uniform distribution whereas in a normal distribution the shape goes up and back down. The probability in a uniform distribution is shaped like a rectangle for continuation.
