Under normal circumstances, insulation jacketing _____.
a. is one of the first tasks completed
b. is one of the last tasks completed
c. is installed at the same time as insulation
d. is installed before system pressure testing is performed
b. is one of the last tasks completed
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Hooks in bars are produced by turning the bars through
A) 90° or 180°. B) 45° or 90°. C) 180° or 270°. D) 30° or 60°.
A propane tank with a tare weight of 15 lbs weighs 31 lbs. How much fuel is in the tank in lbs?
Fill in the blank(s) with the appropriate word(s).
Find the first three numerical values, starting at time n = 0, of the impulse response of the discrete-time system described by the difference equation
9y[n] ? 3y[n ? 1] + 2y[n ? 2] = x[n].
Solution 19.27 Repeat Problem 19.26, except use the normal distribution for the CFAT in years 7 through 10 with an expected value of $2 million and a standard deviation of $500,000.
Problem 19.26
Jennifer, a senior project manager, estimated net cash flow after taxes (CFAT) for a large project she is working on. The additional CFAT of $2,800,000 in year 10 is the salvage value, estimated at 9% of the $31 million first cost for all capital assets.
 FIGURE 1.png)
The PW value at the current MARR of 7% per year is
PW = ?31,000 + 5400(P?A,7%,6) + 2040(P?A,7%,4)(P?F,7%,6) + 2800(P?F,7%,10) = $767
Jennifer believes the MARR will vary over a relatively narrow range, as will the CFAT, especially during the out years of 7 through 10. She is willing to accept the other estimates as certain. Use the following probability distribution assumptions for MARR and CFAT to perform a simulation—hand- or spreadsheet-based.
MARR. Uniform distribution over the range 6% to 10%.
CFAT, years 7 through 10. Uniform distribution over the range $1,600,000 to $2,400,000 for each year.
Plot the resulting PW distribution. Should the plan be accepted using decision making under certainty? Under risk?