Answer: 0.5507
Step-by-step explanation:
Given: The time between sightings of speeders by a radar system is represented by the continuous random variable X, which follows a cumulative distribution function

If we convert 12 minutes into hours, it equals
hours or 0.2 hours.
To find the probability of waiting less than 12 minutes:

Thus, the probability we are looking for is: 0.5507