Operations mgmt homework | Operations Management homework help

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Details:

Complete supplement problems S7.3, S7.5, S7.7, S7.11, S7.15, and S7.28 in the textbook.

 

Submit one Excel file. Put each problem result on a separate sheet in your file. 

 

Problems Note: PX means the problem may be solved with POM for Windows and/or Excel OM.

 

 

 

S7.3If a plant has an effective capacity of 6,500 and an

 

efficiency of 88%, what is the actual (planned) output?

 

 

 

S7.5Material delays have routinely limited production

 

of household sinks to 400 units per day. If the plant efficiency is

 

80%, what is the effective capacity?

 

 

 

S7.7Southeastern Oklahoma State University’s business

 

program has the facilities and faculty to handle an enrollment

 

of 2,000 new students per semester. However, in an effort

 

to limit class sizes to a “reasonable” level (under 200, generally),

 

Southeastern’s dean, Holly Lutze, placed a ceiling on enrollment

 

of 1,500 new students. Although there was ample demand for

 

business courses last semester, conflicting schedules allowed only

 

1,450 new students to take business courses. What are the utilization

 

and efficiency of this system?

 

 

 

S7.11The three-station work cell illustrated in Figure S7.7

 

has a product that must go through one of the two machines at

 

station 1 (they are parallel) before proceeding to station 2.

 

Station 1

Machine A

 

 

 

 

 

                               

 

Capacity: 20 units/hr

 

 

Station 2

Capacity: 5 units/hr

Station 1Machine B

 

     

 

Station 3

Capacity: 12 units/hr

 

Capacity: 20 units/hr

 

a) What is the bottleneck time of the system?

 

b) What is the bottleneck station of this work cell?

 

c) What is the throughput time?

 

d) If the firm operates 10 hours per day, 5 days per week, what is

 

the weekly capacity of this work cell?

 

S7.15A production process at Kenneth Day Manufacturing

 

is shown in Figure S7.9. The drilling operation occurs separately

 

from, and simultaneously with, the sawing and sanding operations.

 

A product needs to go through only one of the three assembly

 

operations (the operations are in parallel).

 

a) Which operation is the bottleneck?

 

b) What is the bottleneck time?

 

c) What is the throughput time of the overall system?

 

d) If the firm operates 8 hours per day, 20 days per month, what

 

is the monthly capacity of the manufacturing process?

 

 

 

 

 

 

 

S7.28James Lawson’s Bed and Breakfast, in a small historic

 

Mississippi town, must decide how to subdivide (remodel)

 

the large old home that will become its inn. There are three

 

alternatives: Option A would modernize all baths and combine

 

rooms, leaving the inn with four suites, each suitable for two to

 

four adults. Option B would modernize only the second floor; the

 

results would be six suites, four for two to four adults, two for

 

two adults only. Option C (the status quo option) leaves all walls

 

intact. In this case, there are eight rooms available, but only two

 

are suitable for four adults, and four rooms will not have private

 

baths. Below are the details of profit and demand patterns that

 

will accompany each option:

 

ALTERNATIVES

ANNUAL PROFIT UNDER VARIOUS DEMAND PATTERNS

HIGH

P

AVERAGE

P

A (modernize all)

$90,000

.5

$25,000

.5

B (modernize all)

$80,000

.4

$70,000

.6

C (status quo)

$60,000

.3

$55,000

.7

                 

Which option has the highest expected monetary val

 

 

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