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Instruction 5 -Referring to Instruction 5

Question 57

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Instruction 5.2
The following table contains the probability distribution for X = the number of traffic accidents reported in a day in Perth.
X0123450.10.20.40.10.00.0P(X)005555\begin{array} { | c | c | c | c | c | c | c | } \hline X & 0 & 1 & 2 & 3 & 4 & 5 \\\hline & 0.1 & 0.2 & 0.4 & 0.1 & 0.0 & 0.0 \\P ( X ) & 0 & 0 & 5 & 5 & 5 & 5 \\\hline\end{array}
-Referring to Instruction 5.2,the variance of the number of accidents is ______

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