1. A manufacturing facility orders high-strength bolts from an outside supplier. The demand for bolts is high, since they are used in a variety of end products manufactured at the facility. Estimated demand (in thousands) over the next 10 weeks is: Week 2 3 4 5 7 8 10 Demand 22 34 32 12 8 44 54 16 76 30 The bolts cost 65 cents each and the interest rate used to compute the holding cost is 0.5 percent per week. The fixed order cost is estimated to be $200. (Hint: Express h as the holding cost per thousand units.) a. What ordering policy is recommended by the Silver-Meal heuristic? b. What ordering policy is recommended by the part period balancing heuristic? c. What ordering policy is recommended by the least unit cost heuristic? d. Which method resulted in the lowest-cost policy for this problem?

Consider the flow in Figure 7–1 but assume that no patients require follow-upappointments. All patients first check in with the single receptionist, which takesan average of 6 minutes. They are then seen by one of two nurses who take weight,blood pressure, etc., which takes an average of 10 minutes. Finally, they are seenby a GP in an examination room, which takes an average of 16 minutes. There arethree GPs. The table below summarizes this data. Assume the clinic has no waitingroom or examination room constraints.Assume that there are eight patients arriving an hour during working hours.Resource Minutes per patient Number of resourcesReceptionist 6 1Nurse 10 2Doctor 16 3a. What is the capacity of each resource?b. Which resource is the bottleneck and hence what is the capacity of the system?

Background: Imagine you work for an e-commerce company that specializes in selling fashion apparel and accessories online. The company has been experiencing a steady growth in customer acquisition but has been facing challenges in retaining these customers. The executive team is concerned about the increasing customer churn rate and wants to develop strategies to improve customer retention. Business Problem: The primary business problem is to reduce customer churn and increase customer retention rates. The company wants to understand why customers are leaving and identify areas where they can make data-driven improvements to retain more customers. This is a critical issue because acquiring new customers is often more expensive than retaining existing ones, and loyal customers tend to spend more over time.   Business Research Question: What factors are associated with customer retention?  Identify the type of research, i.e., exploratory, descriptive, causal.  What type of data will…

Case: The Drop-In Visitor As the door closed behind her departing visitor, Jumanji Residential Supervisor Janet Mills glumly reflected that she had just lost an hour that she could ill afford to lose. She would either have to forego the schedule she was working on or be later for an upcoming meeting. The hour had been lost because of a visit from a pleasant but marginally aggressive sales representative trying to acquaint her with "the greatest little thing to come along". As was her practice, Janet consented to see the visitor although she resented the intrusion. This incident, occurring on a Friday, made Janet realize that she had lost time to four such drop-in visits this week alone. She did not like the idea of simply saying no or otherwise trying to avoid people who wanted to see her, but she was becoming more aware that her work was beginning to suffer because of such demands on her time. Questions: 1. Describe how stress can be both positive and negative.