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Set 10 due today

Set 10 due today. Also c-5 due today Thurs (May 16): deadline for late homework (today’s assignments under door BB 4133 Friday before 3PM) Final exam Tues May 21 5:30-7:30 2 sheets of notes, Scantron Sets 1,9,10;C-1;short answer, mult choice. ANSWERS set 10. WAIT LINE. L= 24 30-24.

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Set 10 due today

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  1. Set 10 due today • Also c-5 due today • Thurs (May 16): deadline for late homework (today’s assignments under door BB 4133 Friday before 3PM) • Final exam Tues May 21 5:30-7:30 • 2 sheets of notes, Scantron • Sets 1,9,10;C-1;short answer, mult choice

  2. ANSWERS set 10 WAIT LINE

  3. L=24 30-24 • (1)(a)L=4 people in drug store

  4. (1)(b)Lq • Lq = 24*24 30(30-24) • Lq= 3.2 people waiting for service

  5. (1)(c) W= 1 30-24 • W=.167 hr • Interpret: W = 10 minutes from time you enter drug store until time you leave

  6. (1)(d) Wq • Wq = 24 30(30-24) • Wq= .13 hour • Interpret: 8 minutes before service

  7. (1)(e) U=24/30=.80 • 80% efficiency • P(server busy)

  8. (1)(f) Po=1-.8=.2 • P(no waiting)

  9. (2) Cost of Waiting • Av 3 customers arrive per hour(given) • 10 hours per day(given) • You compute: 30 customers/day • Cost of waiting $5 per hour(given)

  10. WAIT COST

  11. Labor Cost

  12. Total Cost

  13. (3) SIMULATION

  14. (3) MAXIMUM UNLOADED

  15. FIRST 5 DAYS: RN

  16. delay • Case 1: Demand > Supply Delay = Demand – Supply • Case 2: Demand < Supply Delay =0 • Next slide: Demand = 2B UNL Supply = UNL

  17. FIRST 5 DAYS

  18. DAYS 6-10

  19. DAYS 11-15

  20. Av number delayed per day Total delayed= 1+2+2+1= 6 Number of days = 15 Av = 6/15= 0.4

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