Use the Following information to answer questionse EIA results are recorded as optical-density (OD) ratios. The OD ratio is the ratio of absorbance of the tested sample to the absorbance of a control sample. The greater the OD ratio, the more "positive" is the test result. The EIA, as with most other screening tests, is not perfect; there is some overlap of optical-density ratios of samples that are actually antibody positive and those that are actually antibody negative. This is illustrated in the following figure: Hypothetical distribution of results on an EIA for HIV, by actual antibody status In terms of sensitivity and specificity, what happens if you lower the cut-off from "A" to "C"? Actualy without antbody Actualy have antbody In terms of sensitivity and specificity, what happens if you raise the cut-off from "A" to "B"? OD Rato Mumber of persons

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A: Please refer the attached image for complete solution.

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.