The standard deviation of linear dimensions P and O are 3 m and 4 m, – McqOptions

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1.	The standard deviation of linear dimensions P and O are 3 m and 4 m, respectively. When assembled, the standard deviation (in m) of the resulting linear dimension (P+ Q) is_____.
A.	5
B.	6
C.	4
D.	3
Answer» B. 6

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