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Question
Thermostats are subjected to rigorous testing before they are shipped to air conditioning technicians around the world. Results from the last five samples are shown in the table. Is the process under control?
| Unit # | Sample 1 | Sample 2 | Sample 3 | Sample 4 | Sample 5 |
| 1 | 73.5 | 70.8 | 72.2 | 73.6 | 71.0 |
| 2 | 71.3 | 71.0 | 73.1 | 72.7 | 72.2 |
| 3 | 70.0 | 72.6 | 71.9 | 72.4 | 73.3 |
| 4 | 71.1 | 70.6 | 70.3 | 74.2 | 73.6 |
| 5 | 70.8 | 70.7 | 70.7 | 73.5 | 71.1 |
Answer
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Related questions
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Q:
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Q:
Consider the MPS, BOM, and inventory data shown.
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2
3
4
5
6
7
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10 Finished Item A MPS Start
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Q:
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Q:
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2
3
4
5
6 Requirement
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8
9
11
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Q:
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17
Q:
Job
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2
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Q:
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Q:
A single-sampling plan by attributes is needed for a purchased component. Table G.1 is appended to this exam.
Sample size = 80
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Q:
Refer to the bank process model. The bank's process improvement group has developed a number of process and technology changes that will improve the Teller's process rate per customer from a mean of 3.0 minutes to 2.5 minutes (standard deviation remains at 0.5 minutes). The Bank Manager wants to determine if the improved process rate, along with the special promotion for new customers, will allow the "arrive and immediately leave" rate and average customer wait time in line achieved to still be met (12% balk rate, 9.95 minutes in line). If so, the manager will implement the process and technology changes and allow the special promotion to proceed. Using SimQuick, estimate the new arrive and immediately leave rate and average time in line. What decision should the manager make?
Q:
Walter White must satisfy an annual demand of 50,000 pounds per year. The setup cost for each batch is $6,500 and once the setup is complete, the product may be produced at the rate of 1800 pounds per day. There is a holding cost of $15 per unit per year and the plant operates on a 350-day production year. How big should the production batch be and how long (in days) will it take to produce the batch?
Q:
SimQuick is to be used to simulate the following bank process: Customers arrive at the Entrance Door of the bank with an average time between arrivals of 2.5 minutes. The Line Buffer holds 6 customers. If a customer arrives and the buffer line is filled, the customer leaves. The Work Station Teller's processing time per customer is normally distributed, with a mean of 3.0 minutes and a standard deviation of 0.5 minutes. The Served Customer Buffer in the flowchart is used to count the number of customers processed during the simulation period. A 2-hour period is to be simulated and the simulation should be repeated 30 times. Determine:
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c) The utilization of the teller (% of time working) during the 2-hour period;
Q:
What is degeneracy in the context of linear programming? Why is degeneracy a concern?
Q:
Construct a 3-sigma and R-chart for the length in centimeters of a part from the following table. Sample #
Observation 1
Observation 2
Observation 3
Observation 4 1
0.486
0.499
0.493
0.511 2
0.499
0.506
0.516
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0.496
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0.515
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0.495
0.506
0.483
0.487 5
0.472
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0.469 6
0.473
0.495
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0.495
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0.471 8
0.525
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0.497
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0.495
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Q:
The three-person crew worked their way through the neighborhood, testing doorknobs and windows and slipping past security systems like a team of ninjas. Of course, they weren't ninjas, but a crew of brazen burglars, hoping to grab cash and other valuables to fence at the next level of their supply chain. Fortune smiles on them on this day in the prestigious Edmond Oaks neighborhood. A lawn maintenance crew is creating a tremendous racket mowing and edging lawns, which completely drowns out the sounds of breaking glass. Details of the day's haul appear in Table C.
a. What is the multifactor productivity?
b. What is the labor productivity?
Table C: The Haul ITEM
SALES PRICE
LABOR
MATERIAL Krugerrand
$1,500
1 hr
$2 Flat screen TV
$250
.25
$1 $200 cash
$200
.05
$45 Lava lamp
$5
.15
$25 Rolex watch
$180
.10
$1 Workers are paid at a flat rate of 20% of the sales price of the merchandise. Materials cost
represents the cost of gasoline and surgical gloves, and overhead is 20% of the sales price of
the merchandise.
Q:
Consider this list of jobs that have just arrived and are ready for processing. They all require processing first on machine 1 and then on machine 2. Both machines are now idle. Develop a schedule that minimizes makespan and calculate this makespan time. Now assume that each job can be split into two jobs, each having half the duration on both machine 1 and machine 2. Using the original sequence that minimized average flow time, calculate the flow times for all split jobs What is the effect of this new schedule on the average flow time for these split jobs? Job
Machine 1
Machine 2 1
14
6 2
11
12 3
16
14 4
12
8 5
22
9 6
13
15 7
10
12 8
8
13
Q:
Ten months of data and the forecasts for those same periods are in the table below. Use mean bias, MAD, and MAPE to analyze the accuracy of the forecasts. Month
Actual
Forecast January
42
37 February
58
50 March
58
58 April
77
67.5 May
91
84 June
102
96.5 July
124
113 August
148
136 September
171
159.5 October
177
174