Problem:
Find the probability that $0.69 < 2.1 x-1.5 < 1.13$ where $x \sim $ \text{ExponentialDistribution}[1.8].
from sympy import *
from sympy.stats import *

x = Exponential('x', 1.8)
print(P((0.69 < 2.1*x-1.5) & (2.1*x-1.5 < 1.13)))
