(450 words)1. The company used an interrupted time-series design for a similar problem involving a par- ticular product feature. Describe a test that would utilize an interrupted time-series design to address the pricing question. Would this type of test provide a definitive answer to their question? Why or why not?2. What other type of experimental design might the company utilize to answer the question it is trying to deal with? Describe how that design would work in this case. Would that approach be superior to the interrupted time-series design? Why or why not? 3. Regardless of the approach used, when comparing the effectiveness of the two prices, would you be more interested in total unit sales or total revenue when comparing results? Justify your response.