Question: Use the probability function given in the table to calculate: (a) The mean of the random variable (b) The standard deviation of the random variable

Use the probability function given in the table to calculate:
(a) The mean of the random variable
(b) The standard deviation of the random variable


х 20 30 40 50 0.1 p(x) 0.6 0.2 0.1

20 30 40 50 0.1 p(x) 0.6 0.2 0.1

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