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You have conducted a study on the sensitivity and specificity of a lab test for disease...

You have conducted a study on the sensitivity and specificity of a lab test for disease Y and draw the following conclusions:

  • 125 students who have disease Y test positive
  • 25 students who have disease Y test negative
  • 500 students who do not have disease Y test negative
  • 50 students who do not have disease Y test positive

1.What proportion of those who test negative does NOT have disease Y?

NPV = ( ) % (round to one decimal place)

2.What is the sensitivity of the test?

sensitivity = ( )% (round to one decimal place)

3.What is the specificity of the test?

specificity = ( )% (round to one decimal place)

Math   Statistics-And-Probability   
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