Karima says that only the numbers in columns 4 and form equivalent ratios for 43. Brenda says that any Karima's atties and the numbers in columns 2 and 4 form equivalent ratios for 18.
Savier says that Karimés sztos, Brenda's ratios, and the numbers in columns 1 and 2 ſom equivalent ratios for 43
Jordy says that any pair of columns with even numbers forms equiuzijent ratios for 48.

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)