The manager of Roth Corporation, wants to determine whether or not the type of work schedule for her employees has any effecton their productivity. She has selected 15 production employees at random and then randomly assigned 5 employees to each ofthe 3 proposed work schedules. The following table shows the units of production (per week) under each of the work schedules.Work Schedule (Treatments)Schedule 15060704045Compute MSTRMSTR-9594.68128.1663.8856Schedule 26065655857Schedule 37575554055

Work Schedule (Treatments)Schedule 1 Schedule 2Schedule 3506075606575706555405840455755

Answered: manager of Roth Corporation, wants to…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter12: Queueing Models

Section: Chapter Questions

Problem 59P

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Climate Control, Inc., makes expedition-quality rain gearfor outdoor enthusiasts. Management prepared a forecast ofsales (in suits) for next year and now must prepare a produc-tion plan. The company has traditionally maintained a levelworkforce strategy. All nine workers are treated like familyand have been employed by the company for a number ofyears. Each employee can produce 2,000 suits per month.At present, finished goods inventory holds 24,000 suits. Thedemand forecast follows: Use the Sales and Operations Planning with SpreadsheetsSolver in OM Explorer or develop your own spreadsheetmodels to address the following questions. a. Management is willing to authorize overtime in pe-riods for which regular production and current lev-els of anticipation inventory do not satisfy demand.However, overtime must be strictly limited to no morethan 20 percent of regular-time capacity. Managementwants to avoid stockouts and backorders and is notwilling to accept a plan that calls for shortages.…
The management of Hartman Company is trying to determine the amount of each of two products to produce over the coming planning period. The following information concerns labor availability, labor utilization, and product profitability: Labor-Hours Required Department A B с (hours/unit) Product 1 Product 2 Hours Available Production 1.00 0.30 Profit contribution/unit $30.00 0.20 38.27 0.35 0.20 0.50 $15.00 (a) Develop a linear programming model of the Hartman Company problem. Solve the model to determine the optimal production quantities of products 1 and 2. If required, round your answer to two decimal places. Product 1 Product 2 69.77 M 95 72.09 38 50 (b) In computing the profit contribution per unit, management does not deduct labor costs because they are considered fixed for the upcoming planning period. However, suppose that overtime can be scheduled in some of the departments. Which departments would you recommend scheduling for overtime? Dept A What is the upper limit of what…
b. The Healthy Food Restaurant, a 24-hour restaurant, faces changing requirements from hour tohour. More workers are needed for peak hours, and fewer are needed in between. The followingTable 6 (below) shows the worker requirement for the first 12 hours in the restaurant:Table 6. Staff Requirement at the Healthy Food RestaurantTime Period 10AM11AM12PM1PM2PM3PM4PM5PM6PM7PM8PM9PMRequirement 8 10 12 12 9 7 6 7 9 10 12 8AssignedOn DutyOverstaffed8(i) You are required to apply the first-hour principle to staff each hour with the required number ofcafeteria staff, showing how many staff are on duty each given hour, the number of staffyou have assigned to work each hour and any overstaffing for each hour. i. Schedule the staff to work in 8-hour shifts.
4. The Spencer Optics Company produces an inexpensive line of sunglasses. The manufacturing process consists of assembling two plastic lenses (produced by the firm's plastic molding depart- ment) into a finished frame (purchased from an outside supplier). The company is interested in using material requirements planning to schedule its operations and has asked you to prepare an example to illustrate the technique. The firm's sales manager has prepared a 10-week sales forecast for one of the more popular sunglasses (the Classic model) for your example. The forecast is 100 units per week. Spencer has customer orders of 110 units, 80 units, 50 units, and 20 units in weeks 1, 2, 3, and 4, respectively. The sunglasses are assembled in batches of 300 units. Presently, three such batches are sched- uled: one in week 2, one in week 5, and one in week 8. Complete the following time-phased record: Week hand 1 2 3 4 5 6 7 8 9 10 Classic Model On MPS Record Forecast Orders Projected available…
A company is setting up an assembly line to produce 90 units per hour. The table below identifies the work elements, times, and immediate predecessors. Work Element Time (Sec.) Immediate Predecessor(s) A 25 - B 18 A C 20 A D 5 B, C E 12 C F 8 E G 16 D, F H 12 G Use one of the heuristic decision rules described in Table below to balance the assembly line so that it will produce 90 units per hour. Clearly state the decision rule you use and complete the below table using the selected rule. Decision Rule Logic Longest work element Picking the candidate with the longest time to complete is an effort to fit in the most difficult elements first, leaving the ones with short times to “fill out” the station. Shortest work element This rule is the opposite of the longest work element rule because it gives preference in workstation assignments to those work elements that are quicker. It can be tried…
Which of the following relates to How many employees should be scheduled? 1.Group of answer choices 2.Operations Planning 3.Operations Process 4.Capacity Planning 5.Production-Method Decisions
This process is used in business or manufacturing to predict their future requirements Select one: a. Plant Layout b. Capacity Study c. Forecast d. Scheduling
Tax Prep Advisers, Inc., has forecasted the following staffingrequirements for tax preparation associates over the next12 months. Management would like three alternative staffingplans to be developed. The company currently has 10 associates. No more than 10new hires can be accommodated in any month because oflimited training facilities. No backorders are allowed, andovertime cannot exceed 25 percent of regular-time capacityon any month. There is no cost for unused overtime capac-ity. Regular-time wages are $1,500 per month, and overtimewages are 150 percent of regular-time wages. Undertime ispaid at the same rate as regular time. The hiring cost is $2,500per person, and the layoff cost is $2.000 per person.a. Prepare a staffing plan utilizing a level workforce strategy,minimizing undertime. The plan may call for a one-timeadjustment of the workforce before month 1.b. Using a chase strategy, prepare a plan that is consistent withthe constraint on hiring and minimizes use of overtime.c.…
2. Jamila wants to set up a manufacturing unit, so she meets with Rashid, a humanresource manager at her company. Rashid explains that in order to decide on thehuman resource needs for the unit, they should conduct a workflow analysis. Shesuggests they start by defining the outputs of the process. To do this, what shouldJamila define?A) the processes that will be involved in manufacturingB) the number of people required for productionC) the type of products that will need to be manufacturedD) the special equipment, facilities, and systems needed for productionE) the data and information needed by the work unit
A company makes two products (1 and 2). Each product requires time on two machines A and B. The specifications for each product are as follows; Product 1 Product 2 Processing time on machine A (hrs/unit) 2 2 Processing time on machine B (hrs/unit) 1 2 Material and labor cost (Sh./unit) 14 15 Selling price (Sh./unit) 16 18 Maximum possible sale (units) 130 150 The amount of time available on machine A is 360 hrs and on machine B is 260 hrs. Formulate the LP problem, which when solved, would indicate the number of product 1 and 2, which should be sold in order to maximize total…
Consider a law firm with 15 lawyers and 3 paralegals. The firm is struggling to keep up with the high demand for its services, particularly during the busy litigation seasons. It has been observed that the lawyers spend a significant amount of their time on administrative tasks that could potentially be handled by paralegals. After a careful study of the work distribution within the firm, it was determined that 35% of the activities carried out by the lawyers are administrative in nature. Given that each lawyer works 50 hours a week, please determine: (a) How many additional paralegals should the firm hire to handle the administrative tasks currently performed by the lawyers? (b) If the lawyers' time spent on administrative tasks is redirected to billable legal work, by what percentage could the firm potentially increase its billable hours?
Raquel’s Landscaping Company has contracted for several landscaping jobs. Each job requires preparing the areas (identifying the locations and types of plants, preparing the soil, etc.) and then planting the trees, bushes, and shrubs. The expected time for each of the jobs is shown next. Job Preparingthe Area (days) Planting(days) R 3 2 S 1 3 T 4 5 U 8 5 V 6 4 W 4 3 Raquel is concerned with efficiency. She believes it is probably more efficient to use SPT (shortest processing time) as her priority rule. (a) Develop a sequence using SPT based on processing time for preparing the area. (If two of more jobs have the same processing time, list them alphabetically.) Preparing the Area select a job select a job select a job…

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