In early 2020, medical researchers in China investigated the association between blood type (A, B, AB and O) and severity of COVID-19 symptoms. The researchers collected information about blood type from patients in Jinyintan hospital in Wuhan, China, in January 2020. The table below summarizes the information for a sample of 756 patients from this investigation.

What proportion of these COVID-19 patients had blood type AB?

What proportion of these COVID-19 patients survived?

If we randomly selected one of these patients, what is the probability the patient had blood type AB and survived?

What is the probability a randomly selected COVID-19 patient from this sample with blood type O died?