If the p.d.f. of a c.r.v. X is f(= \(\frac{x^{2}}{18}\), for -3 < x < 3 and = 0, otherwise, then P(|X| < 1) =
A. \(\frac{1}{27}\)
B. \(\frac{1}{28}\)
C. \(\frac{1}{29}\)
D. \(\frac{1}{26}\)
Answer:A
If the p.d.f. of a c.r.v. X is f(= \(\frac{x^{2}}{18}\), for -3 < x < 3 and = 0, otherwise, then P(|X| < 1) =
A. \(\frac{1}{27}\) B. \(\frac{1}{28}\) C. \(\frac{1}{29}\) D. \(\frac{1}{26}\)