Suppose you want to treat your office team to lattes at a local coffee shop. The drinks are $3.25 each, plus you plan to buy a $4 scone for yourself. You also tip the barista 10% and have to pay 7.25% sales tax. How many lattes can you afford if you have $70 to spend ?

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)