Choose the most accurate statement based on the graph shown.

the graph is a good representation of the data.
the graph is misleading because it uses 3-dimensional bars.
the graph is misleading because the vertical range is too small creating the impression that differences are greater than they actually are.

Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)