A Medical Research Project Examined the Relationship Between a Subject's

question 32

Essay

A medical research project examined the relationship between a subject's weight and recovery time from a surgical procedure,as shown in the table below. $\begin{array}{lccc} & \text { Underweight } & \text { Normal weight } & \text { Overweight } \\\text { Less than } 3 \text { days } & 6 & 15 & 3 \\3 \text { to } 7 \text { days } & 30 & 95 & 20 \\\text { Over } 7 \text { days } & 14 & 40 & 27\end{array}$
a.Use relative frequency to develop a joint probability table to show the marginal probabilities.
b.What is the probability a patient will recover in fewer than 3 days?
c.Given that recovery takes over 7 days, what is the probability the patient is overweight?

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