WILL MARK BRAINLIEST A survey was given to 300 students in a Kindergarten class about their favorite subject. 28% of the students choose math as their favorite subject, 45% chose reading and 23% chose both, reading and math. How many students prefer math only as their favorite subject?

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)