The amount of time t (in seconds) it takes a motorist to react to a road emergency is a continuous random variable with probability density function 
What is the expected reaction time for a motorist chosen at random?
Definitions:
Algorithms
Precise rules or procedures that are systematically followed to produce a specific outcome or to solve a problem.
Morpheme
In a language, the smallest unit that carries meaning; may be a word or a part of a word (such as a prefix).
Phoneme
In a language, the smallest distinctive sound unit.
Syntax
The set of rules, principles, and processes that govern the structure of sentences in a given language.
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