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The task of framing a building has been estimated to take an average of 25 days with a standard deviation of four days. What duration should be used if there is to be a 90% confidence that the duration will not be exceeded? What is the proba- bility that the duration will actually exceed 23 days?

The task of framing a building has been estimated to take an average of 25 days with a standard deviation of four days. What duration should be used if there is to be a 90% confidence that the duration will not be exceeded? What is the proba- bility that the duration will actually exceed 23 days?

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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m.pdf Exam.pdf (231 KB) @ 2 6. S W X #3 D DualVIL O Activity Predecessors A B C D E F G H I J ------ CC B,EA,F B,EB,E B,E D,J G,H Duration 3 6 238 5 7 10 6 6 8 3 7. The task of framing a building has been estimated to take an average of 25 days with a standard deviation of four days. What duration should be used if there is to be a 90% confidence that the duration will not be exceeded? What is the proba- bility that the duration will actually exceed 23 days? $ 4 R |24|20|0|0 % 5 G 6 B MacBook Pro brown- H |0|| U & 7 N * 00 K L M 8 F 9 I,K,L 4 K -O P | '
Transcribed Image Text:m.pdf Exam.pdf (231 KB) @ 2 6. S W X #3 D DualVIL O Activity Predecessors A B C D E F G H I J ------ CC B,EA,F B,EB,E B,E D,J G,H Duration 3 6 238 5 7 10 6 6 8 3 7. The task of framing a building has been estimated to take an average of 25 days with a standard deviation of four days. What duration should be used if there is to be a 90% confidence that the duration will not be exceeded? What is the proba- bility that the duration will actually exceed 23 days? $ 4 R |24|20|0|0 % 5 G 6 B MacBook Pro brown- H |0|| U & 7 N * 00 K L M 8 F 9 I,K,L 4 K -O P | '
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