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total variance for the overall system

A system has 3 independent additive error sources being the following:
Uniform from 2 to 14,
Exponential such that lambda is .4
Rayleigh such that sigma is 3

Solution Preview

Uniform distribution:
b = 14, a = 2
Variance of uniform distribution Vu = (b-a)^2/12 = (14-2)^2/12
=> Vu = 144/12 ...

Solution Summary

The total variance for the overall system is determined.

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