If XXX has CDF F(x)=1−e−3xF(x) = 1 - e^{-3x}F(x)=1−e−3x for x≥0x \ge 0x≥0, what is the 75th percentile of XXX?
ln(4)3\frac{\ln(4)}{3}3ln(4)
ln(4)−3\frac{\ln(4)}{-3}−3ln(4)
ln(3)4\frac{\ln(3)}{4}4ln(3)
1ln(3)\frac{1}{\ln(3)}ln(3)1