ENGINEERING DESIGN PROCESS
3rd Edition
ISBN: 9781305253285
Author: HAIK
Publisher: CENGAGE L
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Chapter 2.8, Problem 2P
Assume that the optimistic, most likely, and pessimistic activity times are as given in Table 2.4.
- a. Complete the table.
- b. Determine the probability of finishing the job in 32 weeks.
Table 2.4: Problem 2
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QUESTION 4a. The Healthy Food Restaurant operates seven days a week. The daily requirements for staff areestimated as follows, in Table 5 (below):Table 5. Daily requirements for staff at the Healthy Food Restaurant
Days
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
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Problem 2.3
The following problem can be solved using the generalized conservation and accounting
principle to determine if a recycling plant is profitable annually.
Operating information:
●
●
The plant operates 9 hours each day, 5 days each week, and 48 weeks each year.
The plant purchases 30 tons of aluminum (at a rate of $0.02/lb) during each operating
week.
The plant has 5 full-time employees who are paid $18 per hour. All employees work
during all of the plant's operating hours.
The plant produces 7 bales of recycled aluminum per day, which it sells for $950 per bale.
[Note: 1 ton = 2000 lb]
Answer the following questions:
(a) Identify the system (in words).
(b) Identify the "stuff" you are accounting for in this analysis.
(c) In order to determine the plant's annual profitability, would one be interested in studying
the instantaneous rate of change in "stuff" (i.e. rate form) or the total change in "stuff"
over an interval (i.e. finite-time form)?
(d) On a system diagram (hint:…
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