Sales Forecast Modeling

question 5

Essay

Sales Forecast Modeling. The change in the quantity of Beta service demanded in any given week is inversely proportional to the change in sales by Alpha in the previous week. That is, if sales of Alpha rose by X percent last week, sales of Beta can be expected to fall by 0.5X percent this week.
A. Write the equation for next week's sales of Beta, using the symbols B = sales of Beta services, A = Alpha sales, and t = time. Assume there will be no shortages of either product.
B. Last week 200 units of Beta and 450 units of Alpha were sold. Two weeks ago, 300 units of Alpha were sold. What would you predict the sales of Beta to be this week?

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Definitions:

ECU

Stands for Engine Control Unit, a computer within a vehicle that controls various aspects of the engine's operation, including timing, air/fuel mixture, and more.

Truck System

A comprehensive arrangement of components and mechanisms which constitute the functionality of a truck, including its engine, transmission, drivetrain, and electronics.

Truck Data Bus System

A digital communication network in trucks that carries data between various electronic control units (ECUs).

SAE J1939

Covers both the hardware and software protocols used on the current CAN 2.0 platform for medium-/heavy-truck data bus. A J1939 truck data bus is accessed by connecting to an EST to a nine-pin Deutsch black (pre-2014) or green (post-2014) connector. Post-2014 Volvo-Mack applications require a J1962 connector.