©G Dear2010 – Not to be sold/Free to use General Mathematic (HSC) Applications of Probability Two Way Tables Stage 6 - Year 12 Press Ctrl-A ©G Dear2010 – Not to be sold/Free to use

Two Way Tables Tables that shows the results of an experiment. 9 3 12 200 students are tested for polio. * 12 have a positive result, 9 were diagnosed correctly. * 188 had a negative result, 8 were diagnosed incorrectly. Test Results Accurate Inaccurate Total Positive Result 9 3 12 Negative Result 180 8 188 Total 189 11 200 9 12 3 4 P( Accurate Positive Result) = = 188 200 9 25 P( Negative Result) = =