We developed a severity score (1 to 5) based on a set of measures (e.g., temperature, blood…

We developed a severity score (1 to 5) based on a set of
measures (e.g., temperature, blood pressure) to determine if a patient has
sepsis. Answer the following:

a. Suppose we use a score of 3 or higher as our prediction
that the patient has sepsis. The table below shows the actual results (values
are number of patients that fall under each category). Determine the
sensitivity and specificity of this test:

b. Use the scores of 3 and 5 (don’t worry about the others)
and plot the ROC curve. Estimate the AUC and draw conclusions.