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hw4

An article in Optical Engineering ["Operating Curve Extraction of a Correlator's Filter" (2004, Vol. 43, pp. 2775-2779)] reported on use of an optical correlator to perform an experiment by varying brightness and contrast. The resulting modulation is characterized by the useful range of gray levels. The data are shown below:

    Useful Range (ng) y     Brightness (%) X1
         Contrast (%) X2
968653
737832
2283444
477557
1007675
909735
2411390
344224
267554

Minitab was used to fit a multiple linear regression model relating the useful range of gray levels to brightnessand contrast. The output follows.

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answered by: merlin
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