\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
Suppose \(X\) represents the time (in hours) a device operates before needing maintenance, with values on \([0, 2]\), and its probability density function \(f(x)\) is shown in the graph below.
Using the graph, estimate the probability that the device operates for 1 hour or less.
\(P(0 \leq X \leq 1) =\)