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Find the expected value, the variance, and the standard deviation. Thank you! A probability density function of a random variable is given by f(x) =

Find the expected value, the variance, and the standard deviation. Thank you!

A probability density function of a random variable is given by f(x) = 24 on the interval [4, 9]. Find the expected value, the variance, and the standard deviation. . . ... The expected value is u ~ (Round to two decimal places as needed.)

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