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If probability density function of a random variable x is
f(x) = x2 for -1 ≤ x ≤ 1, and
       = 0 for any other value of x
then, the percentage probability $${\text{P}}\left( { - \frac{1}{3} \leqslant {\text{x}} \leqslant \frac{1}{3}} \right)$$    is

If probability density function of a random variable x is
f(x) = x2 for -1 ≤ x ≤ 1, and
       = 0 for any other value of x
then, the percentage probability $${\text{P}}\left( { - \frac{1}{3} \leqslant {\text{x}} \leqslant \frac{1}{3}} \right)$$    is Correct Answer 2.47

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