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Which of the Following Is Not True for a Random a≤x≤ba \leq x \leq b

Question 31

Multiple Choice

Which of the following is not true for a random variable X that is uniformly distributed over the interval a≤x≤ba \leq x \leq b ?


A) E ( X ) = ( a + b ) / 2
B) = V(X) =(b−a) 2/12V(X) =(b-a) ^{2} / 12
C) σ=(b−a) /6 \sigma = ( b - a ) / 6
D) f ( x ) = 1b−a if a≤x≤b\frac { 1 } { b - a } \text { if } a \leq x \leq b

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