A hospital reports that two patients have been admitted who have contracted Crohn's disease. Suppose our experiment consists of observing whether each patient survives or dies as a result of the disease. The simple events and probabilities of their occurrences are shown in the table (where S in the first position means that patient 1 survives, D in the first position means that patient 1 dies, etc.).
$$\begin{array} { c c }
\text { Simple Events } & \text { Probabilities } \
S S & 0.56 \
S D & 0.20 \
D S & 0.19 \
D D & 0.05
\end{array}$$ Find the probability that at least one of the patients does not survive.
A) 0.39
B) 0.44
C) 0.20
D) 0.05

Question

A hospital reports that two patients have been admitted who have contracted Crohn's disease. Suppose our experiment consists of observing whether each patient survives or dies as a result of the disease. The simple events and probabilities of their occurrences are shown in the table (where S in the first position means that patient 1 survives, D in the first position means that patient 1 dies, etc.). 
$$\begin{array} { c c } 
\text { Simple Events } & \text { Probabilities } \
S S & 0.56 \
S D & 0.20 \
D S & 0.19 \
D D & 0.05
\end{array}$$ Find the probability that at least one of the patients does not survive.
A) 0.39
B) 0.44
C) 0.20
D) 0.05

Quizplus · Accepted Answer

The Answer of A hospital reports that two patients have been admitted who have contracted Crohn's disease. Suppose our experiment consists of observing whether each patient survives or dies as a result of the disease. The simple events and probabilities of their occurrences are shown in the table (where S in the first position means that patient 1 survives, D in the first position means that patient 1 dies, etc.). 
$$\begin{array} { c c } 
\text { Simple Events } & \text { Probabilities } \
S S & 0.56 \
S D & 0.20 \
D S & 0.19 \
D D & 0.05
\end{array}$$ Find the probability that at least one of the patients does not survive.
A) 0.39
B) 0.44
C) 0.20
D) 0.05