Calculate expected value and standard deviation of variable

Reference no: EM13210332

On hot, sunny, summer days, Jane rents inner tubes by the river that runs through her town. Based on her past experience, she has assigned the following probability distribution to the number of tubes she will rent on a randomly selected day.

x 25 50 75 100 Total
P(x) .20 .40 .30 .10 1.00

(a) Calculate the expected value and standard deviation of this random variable.

Reference no: EM13210332

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