Find​ E(x),E(x2​),the​ mean, the​ variance, and the standard deviation of the random variable whose probability density function is given below.   ​f(x)=1/1152​x, [0,48]   ​E(x)= ​(Type an integer or a simplified​ fraction.)   ​E(x2​)= ​(Type an integer or a simplified​ fraction.)   μ= ​(Type an integer or a simplified​ fraction.)   σ2= ​(Type an integer or a simplified​ fraction.)   σ= ​(Type an exact​ answer, using radicals as​ needed.)

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Q: = 1- Q(x).

A: