Question: The probability distribution for a random variable is approximately shown from the table below. From the table, find the lower bound of the standard deviation

The probability distribution for a random variable is approximately shown from the table below. From the table, find the lower bound of the standard deviation of the random variable. (Note: the weighted mean is E (X)).

X	1	2	3	4	> 5
p	0.1	0.2	0.3	0.1	0.3

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