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A Table of Joint Probabilities Is Shown Below Calculate the Marginal Probabilities of Event B

Question 45

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A table of joint probabilities is shown below. A1A2A3B10.150.250.20B20.100.150.15\begin{array} { | c | c | c | c | } \hline & A _ { 1 } & A _ { 2 } & A _ { 3 } \\\hline B _ { 1 } & 0.15 & 0.25 & 0.20 \\\hline B _ { 2 } & 0.10 & 0.15 & 0.15 \\\hline\end{array} Calculate the marginal probabilities of event B.

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