\section*{Question 3}
This hypermarket sells televisions whose lifespan, expressed in years, can be modelled by a random variable that follows an exponential distribution with parameter $\lambda$. The average lifespan of a television is eight years, which is expressed as: $\lambda = \frac{1}{8}$.\\
The probability that a television chosen at random still works after six years has a value rounded to the nearest thousandth of:\\
a. 0.750\\
b. 0.250\\
c. 0.472\\
d. 0.528