Which Statistical Method Should Be Selected in the Following Situation

question 16

Multiple Choice

Which statistical method should be selected in the following situation?
"Suppose a laboratory is interested in determining the prognostic ability of selected laboratory tests to predict patient outcomes following severe head trauma, based on a comparison of survivors versus non-survivors at predetermined times following the head trauma."

• A)t-test
• B)unpaired t-test
• C)paired t-test
• D)chi-square analysis