For z=x+y where x=30cm +/- 5cm and y=40cm +/- 8cm I don't understand what to do here, I guess I don't know what they are asking. How does this get set up? How do I do the z, x, and y parts? Do I need to do it 2x, once for + and another for -?
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Originally Posted by redman223 For z=x+y where x=30cm +/- 5cm and y=40cm +/- 8cm I don't understand what to do here, I guess I don't know what they are asking. How does this get set up? How do I do the z, x, and y parts? Do I need to do it 2x, once for + and another for -? Substitute x = 30, , y = 40, , z = x + y = 70. Solve for . It's expected you've got some familiarity with error analysis.
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