Answered: As an analyst, we would like to perform…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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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)

4 -
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.
Category
A
B
Others
Number of observations
228
285
456
171
Number ofunits completed
610
1127
3025
(none)
a) O (0,3702 0,4298)
b) O (0,4004 0,3996)
c) O (0,1805 0,1209)
d)
(0,3746 0,4254)
e)
(0,1253 0,1761)

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