Answer (A) is correct . Probability distribution theory can be used to project sales. It is a mathematical method for making decisions about the likelihood of future events (such as sales) in the face of uncertainty. Various estimates of sales (generated from the sales force) can be weighted with different probabilities.
Answer (B) is incorrect because A Gantt chart is a bar chart used to measure progress toward a goal.
Answer (C) is incorrect because A learning curve measures the benefit of experience in the early stages of a new task.
Answer (D) is incorrect because Queuing (waiting-line) theory is used to determine the optimum balance between the cost of providing service to reduce waiting lines and the cost of allowing waiting lines to exist when items in the queue arrive at random.
| 
