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f(x)={2x49 if 0≤x≤70 otherwise f ( x ) = \left\{ \begin{array} { c l } \frac { 2 x } { 49 } & \text { if } 0 \leq x \leq 7 \\0 & \text { otherwise }\end{array} \right.

Question 5

Multiple Choice

f(x) ={2x49 if 0≤x≤70 otherwise f ( x ) = \left\{ \begin{array} { c l } \frac { 2 x } { 49 } & \text { if } 0 \leq x \leq 7 \\0 & \text { otherwise }\end{array} \right. is a probability density function for a continuous random variable X. Find the variance.Round to the nearest hundredth.


A) 3.26
B) 2.18
C) 1.09
D) 2.72

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