Consider the following exponential probability density function. [ f(x) = 1/4 * e⁽⁻¹/⁴⁾ for x ≥ 0 ] a. Which of the following is the formula for P(x ≤ x0)?
1) P(x ≤ x0) = 1 - e⁽⁻¹/⁴⁾ * x0)
2) P(x ≤ x0) = 1 - e⁽⁻¹/⁴⁾ * x0)
3) P(x ≤ x0) = e⁽⁻¹/⁴⁾ * x0)
4) P(x ≤ x0) = e⁽⁻¹/⁴⁾ * x0)