OPERATIONS MANAGEMENT W/ MYLAB <C>
19th Edition
ISBN: 9781323900154
Author: HEIZER
Publisher: PEARSON C
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Question
Chapter 10, Problem 30P
a)
Summary Introduction
To determine: The standard time for the operation.
Introduction: Time study is the basis that helps set the standard time; it would time a sample of the performance of the worker.
b)
Summary Introduction
To determine: The number of sample size.
Introduction: Thesample size is required to determine the number of observations that are necessary to find the true cycle time.
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Students have asked these similar questions
Nine observations from a work measurement study using continuous timing are shown below. Allowances are determined as: personal, five percent; fatigue, six percent; delay, six percent. Use the Work Measurement Excel template to determine the standard time for this operation.
Work
Observation
Element
1
2
3
4
5
6
7
8
9
Performance Rating
A
0.09
0.13
0.06
0.05
0.11
0.09
0.14
0.13
0.14
85%
B
0.25
0.18
0.23
0.20
0.24
0.24
0.27
0.26
0.26
115%
C
0.47
0.51
0.47
0.46
0.49
0.49
0.51
0.47
0.48
110%
D
0.61
0.69
0.65
0.60
0.71
0.67
0.67
0.69
0.73
90%
E
0.72
0.76
0.74
0.68
0.79
0.81
0.76
0.80
0.81
115%
F
1.02
1.04
0.98
1.02
1.08
1.12
1.04
1.07
1.09
85%
Round your answer to two decimal places.
minutes
Nine observations from a work measurement study using continuous timing are shown below. Allowances are determined as: personal, five percent; fatigue, eight percent; delay, five percent. Use the Work Measurement Excel template to determine the standard time for this operation.
Work
Observation
Element
1
2
3
4
5
6
7
8
9
Performance Rating
A
0.09
0.14
0.08
0.07
0.10
0.09
0.15
0.14
0.15
110%
B
0.23
0.20
0.22
0.20
0.24
0.23
0.29
0.27
0.27
90%
C
0.49
0.51
0.49
0.46
0.49
0.49
0.51
0.49
0.48
95%
D
0.64
0.66
0.63
0.62
0.69
0.67
0.67
0.66
0.70
115%
E
0.72
0.74
0.74
0.69
0.81
0.82
0.79
0.80
0.82
105%
F
1.01
1.03
0.99
0.99
1.09
1.12
1.03
1.07
1.12
85%
Round your answer to two decimal places.
minutes
Installing mufflers at the Stanley Garage in Golden, Colorado, involves five work elements. Linda Stanley has timed workers performing these tasks seven times, with the results shown in the following table.
Job elements
OBSERVATIONS (MINUTES)
Performance rating (%)
1
2
3
4
5
6
7
1
Select correct mufflers
4
5
4
6
4
15
4
100
2
Remove muffler
6
8
7
6
7
6
7
90
3
Weld/install new muffler
15
14
14
12
15
16
13
105
4
Check/inspect work
3
4
24
5
4
3
18
100
5
Complete paperwork
5
6
8
-
7
6
7
130
By agreement with her workers, Stanley allows a 10% fatigue factor and a 10% personal-time factor. To compute standard time for the work operation, Stanley excludes all observations that appear to be unusual or nonrecurring. She does not want an error of more than 5%.
What is the standard time for the task?
How many observations are needed to assure a 95.45%…
Chapter 10 Solutions
OPERATIONS MANAGEMENT W/ MYLAB <C>
Ch. 10 - Prob. 1DQCh. 10 - Prob. 2DQCh. 10 - Prob. 3DQCh. 10 - Prob. 4DQCh. 10 - Prob. 5DQCh. 10 - Prob. 6DQCh. 10 - Prob. 7DQCh. 10 - Prob. 8DQCh. 10 - Prob. 9DQCh. 10 - Prob. 10DQ
Ch. 10 - Prob. 11DQCh. 10 - Prob. 12DQCh. 10 - Prob. 13DQCh. 10 - Prob. 14DQCh. 10 - Prob. 1PCh. 10 - Prob. 2PCh. 10 - Draw an activity chart for a machine operator with...Ch. 10 - Prob. 4PCh. 10 - Prob. 5PCh. 10 - Prob. 6PCh. 10 - Prob. 7PCh. 10 - Prob. 8PCh. 10 - Prob. 9PCh. 10 - Prob. 10PCh. 10 - Prob. 11PCh. 10 - Prob. 12PCh. 10 - Prob. 13PCh. 10 - Prob. 14PCh. 10 - Prob. 15PCh. 10 - Prob. 16PCh. 10 - Prob. 17PCh. 10 - Prob. 18PCh. 10 - Prob. 19PCh. 10 - Prob. 20PCh. 10 - Prob. 21PCh. 10 - Prob. 22PCh. 10 - Prob. 23PCh. 10 - Prob. 24PCh. 10 - Prob. 25PCh. 10 - Prob. 26PCh. 10 - Prob. 27PCh. 10 - Prob. 28PCh. 10 - Prob. 29PCh. 10 - Prob. 30PCh. 10 - Prob. 31PCh. 10 - Prob. 32PCh. 10 - Prob. 33PCh. 10 - Prob. 34PCh. 10 - Prob. 35PCh. 10 - Prob. 36PCh. 10 - Prob. 37PCh. 10 - Prob. 38PCh. 10 - Prob. 1CSCh. 10 - Prob. 2CSCh. 10 - Prob. 3CSCh. 10 - Prob. 4CSCh. 10 - Prob. 2.1VCCh. 10 - Prob. 2.2VCCh. 10 - Prob. 2.3VCCh. 10 - Prob. 2.4VCCh. 10 - Prob. 1.1VCCh. 10 - Prob. 1.2VCCh. 10 - Prob. 1.3VC
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Similar questions
- Nine observations from a work measurement study using continuous timing are shown below. Allowances are determined as: personal, five percent; fatigue, five percent; delay, seven percent. Use the Work Measurement Excel template to determine the standard time for this operation. Work Observation Element 1 2 3 4 5 6 7 8 9 Performance Rating A 0.11 0.14 0.10 0.09 0.12 0.11 0.15 0.14 0.15 105% B 0.24 0.20 0.21 0.22 0.24 0.23 0.28 0.26 0.26 85% C 0.46 0.48 0.46 0.44 0.48 0.48 0.48 0.46 0.49 100% D 0.64 0.66 0.65 0.59 0.71 0.69 0.69 0.66 0.71 115% E 0.70 0.74 0.74 0.68 0.79 0.83 0.77 0.80 0.84 100% F 1.01 1.05 1.01 1.00 1.09 1.12 1.05 1.06 1.12 95% Round your answer to two decimal places. minutesarrow_forwardActivity 4A: I conduct performance ratings for two employees of the same nature of work using the Westinghouse Rating System. The observed time for an operator to finish a task which is tightening of screws for 2 minutes. His ratings were noted, as follows: Good skill, C1 + 0.06 Excellent Efforts, B1 + 0.08 Average condition, C + 0.02 Good consistency, C + 0.01 Total Westinghouse Rating + 0.17 The normal time for that operation would be = 2.0 x 1.17 = 2.34 min. To find the standard time at 20% allowance, = 2.34 x 100 = 2.92 min. (100 – 20) Explain. Be able to describe your basis, or give comments, on how you came up with their total rating. Set the standard time at 20% allowance.arrow_forwardA Methods and Measurements Analyst needs to develop a time standard for a certain task. The task involves use of a ruler, square, and portable electric saw to mark and cut the "notch" in a rafter (a standard carpentry task of home construction). In a preliminary study, he observed one of his workers performing this task five times. The observations were made in an air-conditioned, well-lit training facility, at ground level, with all tools and equipment clean and readily available. Observation: 1 2 3 4 5 Task time (seconds): 82 74 80 88 76 (a) What is the actual average time for this task? (b) What is the normal time for this task if the employee worked at a 10% faster pace than is typical for adequately trained workers? (c) What is standard time for this task if allowances sum to 12%? (d) If the analyst then thought more carefully about his experiment and decided that the allowances needed to be increased to match the real (outside, not…arrow_forward
- 1) Job design specifies the tasks that constitute a job for an individual or a group. Briefly describe the five components of job design?arrow_forwardAfter training, Mary Fernandez, a computer technician, had an average observed time for memory-chip testsof 12 seconds. Mary’s performance rating is 100%. The firmhas a personal fatigue and delay allowance of 15%.a) Find the normal time for this process.b) Find the standard time for this process.arrow_forwardDescribe the job design to specify the work material and methods?arrow_forward
- Use the data in the table below to answer questions 1 to 3. Observation 1 2 3 4 5 6 7 8 Time (seconds) 17 18 15 14 13 15 16 2 1. Using the data above, calculate the observed time for the task. 2. If the person observed worked at a pace that is 80% of normal, what should be the normal timefor this task? 3. If the person observed worked at a pace that is 80% of normal, and if the appropriate allowance for this task is 25% of job time, what should be the standard time?arrow_forwardWhat is the significance of work measurements and time standards to a business? Are there any drawbacks to putting these standards in place?arrow_forwardDefine job analysis and Describe it uses. Construct a form for a sample job description. Why is job description being necessary before developing a job specification?arrow_forward
- The owner of mid-sized cat motel wants to develop a time standard for the task of cleaning a cat cage. In a preliminary study, she observed one of her workers perform this task six times, with the following results: Observation 1 2 3 4 5 6 Time(Seconds) 99 87 90 81 93 90 What is the standard time for this task if the employee worked at a 50 percent faster pace than average, and an allowance of 10 percent of the workday is used?arrow_forwardHow many work cycles should be timed to estimate the average cycle time to within 2 percent ofthe sample mean with a confidence of 99 percent if a pilot study yielded these times (minutes):5.2, 5.5, 5.8, 5.3, 5.5, and 5.1? The standard deviation is .253 minutes per cycle.arrow_forwardAfter being observed many times, Beverly Demarr, ahospital lab analyst, had an average observed time for blood testsof 12 minutes. Beverly's performance rating is I 05%. The hospitalhas a personal, fatigue, and delay allowance of 16%.a) Find the normal time for this process.b) Find the standard time for this blood test.arrow_forward
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