One card is drawn at random from the deck of cards shown. which of the following probabilities is equal to one?
p(even or odd)
p(even and odd)
p(not yellow)

Me. i can't figure out this question. give an explanation too. .

Select the graph of the solution. click until the correct graph appears. |x| = 3

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)