Question 1197965
300 patients: 100A(87 with elevated CL), 200NA (43 with elevated CL, 157 w/o)
a patient is selected at a random from the 300 patients.:
P(A-elevated CL) = 87/300 
P(NA) = 200/300 = 2/3
P(NA-non elevated CL) = 157/300