(Solution) - A randomized experiment was conducted in which patients with coronary -(2025 Original AI-Free Solution)

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Academic Level: Undergrad. (yrs 3-4)

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A randomized experiment was conducted in which patients with coronary artery disease either had angioplasty or bypass surgery. The accompanying table shows the incidence of angina (chest pain) among the patients 5 years after treatment.

Let A represent angioplasty and B represent bypass.
(a) Calculate r{Yes | A} and r{Yes | B}.
(b) Calculate r{A| Yes} and r{A | No}.