Q: What is the mean assembly time per product unit for size C in terms of hour?

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
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As an analyst, we would like to perform a work sampling study on an assembly line. The jobs can be
differentiated on the basis of the product size: A, B, and C. We perform a study over a five-week period
that equals to 200 working hours. There are 12 workers to be examined. In total, we perform 1140
observations. Yet, the worker absences lead to 15 worker-day deduction from the total working hours
where workers work 8 hour each day. The study results are tabulated below.
Q: For the C size product, construct a 96% confidence interval about the mean assembly time per product
in terms of hours.
a) (0,3702 0,4298)
b) (0,4004 0,3996)
c) (0,1805 0,1209)
d) (0,3746 0,4254)
e) (0,1253 0,1761)

As an analyst, we would like to perform a work sampling study on an assembly line. The jobs can be
differentiated on the basis of the product size: A, B, and C. We perform a study over a five-week period that
equals to 200 working hours. There are 12 workers to be examined. In total, we perform 1140 observations.
Yet, the worker absences lead to 15 worker-day deduction from the total working hours where workers work
8 hour each day. The study results are tabulated below.
2-
Q: What is the mean assembly time per product unit for size C in terms of hour?
Category
A
B
Others
Number of observations
228
285
456
171
Number ofunits completed
610
1127
3025
(none)
a)
0,1136
b)
0,0251
c) O 0,3015
d)
0,7537
e)
0,0661
Transcribed Image Text:As an analyst, we would like to perform a work sampling study on an assembly line. The jobs can be differentiated on the basis of the product size: A, B, and C. We perform a study over a five-week period that equals to 200 working hours. There are 12 workers to be examined. In total, we perform 1140 observations. Yet, the worker absences lead to 15 worker-day deduction from the total working hours where workers work 8 hour each day. The study results are tabulated below. 2- Q: What is the mean assembly time per product unit for size C in terms of hour? Category A B Others Number of observations 228 285 456 171 Number ofunits completed 610 1127 3025 (none) a) 0,1136 b) 0,0251 c) O 0,3015 d) 0,7537 e) 0,0661
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