2) The aggregate used in road construction begins degrading integrity of said roadway when pieces begin exceeding 23.5 millimeters in diameter. Any pieces smaller than 23.5mm in diameter are fine. The recently delivered load of aggregate being used has a 19mm mean and 5.5mm standard deviation. What percent of the load is usable if we set the max size as 23mm?

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
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2. Please help me answer this including the z-table.

2) The aggregate used in road construction begins
degrading integrity of said roadway when pieces begin
exceeding 23.5 millimeters in diameter. Any pieces
smaller than 23.5mm in diameter are fine.
The recently delivered load of aggregate being used has
a 19mm mean and 5.5mm standard deviation.
What percent of the load is usable if we set the max size
as 23mm?
Transcribed Image Text:2) The aggregate used in road construction begins degrading integrity of said roadway when pieces begin exceeding 23.5 millimeters in diameter. Any pieces smaller than 23.5mm in diameter are fine. The recently delivered load of aggregate being used has a 19mm mean and 5.5mm standard deviation. What percent of the load is usable if we set the max size as 23mm?
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