Short-range forecasts tends to be more accurate than longer-range forecasts.

The first step in devising an effective supply chain strategy is to consider the nature of the demand for your products.

Suppose that the last five months of sales were 10, 8, 10, 6, 9 units, respectively. Suppose further that the last five forecasts were 11, 10, 8, 6, 8 units, respectively. What is the Mean Absolute Deviation (MAD) of these forecasts?

Demand for ice cream at the Ouachita Dairy can be approximated by a normal distribution with a mean of 47 gallons per day and a standard deviation of 8 gallons per day. The management desires a service level of 95%. Lead time is four days. What reorder point would be consistent with the desired service level in an EOQ model? 

Fresh Market Doughnuts prepares and sells fresh doughnuts. The regular price is $1.25. Day-old doughnuts are sold for $0.50 each. The cost of baking doughnuts is $0.80, and demand is estimated to be normally distributed with a mean of 150 and a standard deviation of 50. What is the optimal stocking level? 

Using the ABC classification system for inventory, which of the following is a true statement?

Safety stock can be defined as the amount of inventory carried in addition to the expected demand.

Longer-range forecasts tend to be more accurate than shorter-range forecasts. For example, a forecast of customer demand in June 2035 is usually more accurate than a forecast for June 2025.

A. Escuchar: La vida de Marcela. You will hear a description of what Marcela likes to do in her free time. First, read the statements below. Then, based on what you hear, decide if each statement is Cierto (true) or Falso (false) and select the answer from the dropdown menu. If the information is not mentioned in the passage, select No se menciona (not mentioned).  (1 pt. each; 8 pts. total) 1. Marcela no tiene un trabajo. [blank1]  2. Marcela no tiene mucho tiempo libre durante los días de la semana. [blank2] 3. Marcela y sus amigos van a la piscina cuando hace mucho calor. [blank3] 4. Marcela y sus amigos juegan al voleibol. [blank4] 5. Marcela compra las bebidas para llevar a la playa. [blank5] 6. Marcela y sus amigos pasan todo el día en la playa. [blank6] 7. Marcela y sus amigos comen en la casa. [blank7] 8. Marcela y sus amigos bailan en una discoteca. [blank8]  

A. El pretérito: verbos irregulares – La semana pasada. What happened last week for Adriana and her roommates? First, read Adriana’s statements. Then, for each blank, choose the most appropriate verb according to the context of the sentence and conjugate it in the preterit. Type your response in the space provided. (2 pt. each: 1pt. for correct verb choice, 1 pt. for correct conjugation; 14 pts. total) MODELO:  Ayer yo fui (ir / ser / tener) al gimnasio para hacer ejercicio.   1. Anoche Olivia y yo [blank1] [saber / venir / ver] una película nueva en Netflix. 2. El miércoles yo [blank2] [estar / poner / querer] en el apartamento sola por unas horas. 3. El jueves Carla [blank3] [ir / haber / saber] la nota que recibió en su examen y celebramos (¡sacó una A!). 4. El viernes nuestros amigos [blank4] [decir / hacer / venir] al apartamento para una fiesta. 5. El martes invité a mi novio a cenar, pero él no [blank5] [querer / decir / traer] salir. 6. El lunes María no [blank6] [tener / ser / poder] ir al cine porque estaba cerrado. 7. El domingo Carlos y Pepe nos [blank7] [hacer / traer / ir] el refrigerador nuevo.