Blood type and survival rate - In early 2020, medical researchers in China investigated the association between blood type (A, B, AB and O) andseverity of COVID-19 symptoms. The researchers collected information about blood type from patients in Jinyintan hospital in Wuhan, China, inJanuary 2020. The table below summarizes the information for a sample of 867 patients from this investigation.COVID patientsSurvivedDiedTotalBlood Type A28542327Blood Type B20425229Blood Type AB78987Blood Type O19925224Total766101867Round all answers to 4 decimal places.1. What proportion of these COVID-19 patients had blood type AB?2. What proportion of these COVID-19 patients died?3. If we randomly selected one of these patients, what is the probability the patient both had blood type A and survived?4. What is the probability a randomly selected COVID-19 patient from this sample with blood type AB died?

1. The proportion of these COVID-19 patients had blood type AB is, PBlood type AB=Number of…

1. What proportion of these COVID-19 patients had blood type AB? 2. What proportion of these COVID-19 patients died? 3. If we randomly selected one of these patients, what is the probability the patient both had blood type A and survived? 4. What is the probability a randomly selected COVID-19 patient from this sample with blood type AB died?

1. What proportion of these COVID-19 patients had blood type AB? 2. What proportion of these COVID-19 patients died? 3. If we randomly selected one of these patients, what is the probability the patient both had blood type A and survived? 4. What is the probability a randomly selected COVID-19 patient from this sample with blood type AB died?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Estimation

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Question

Blood type and survival rate - 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 867 patients from this investigation.
COVID patients
Survived
Died
Total
Blood Type A
285
42
327
Blood Type B
204
25
229
Blood Type AB
78
9
87
Blood Type O
199
25
224
Total
766
101
867
Round all answers to 4 decimal places.
1. What proportion of these COVID-19 patients had blood type AB?
2. What proportion of these COVID-19 patients died?
3. If we randomly selected one of these patients, what is the probability the patient both had blood type A and survived?
4. What is the probability a randomly selected COVID-19 patient from this sample with blood type AB died?

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