Answer :
The probability that a train is not late is 0.85
Probabilities
Probabilities are used to determine the chances of events.
The probability that a train is late is given as:
[tex]p = 0.15[/tex]
Complement rule
The probability that a train is not late is calculated using the following complement rule
[tex]q=1 - p[/tex]
Substitute 0.15 for p
[tex]q=1 - 0.15[/tex]
[tex]q=0.85[/tex]
Hence, the probability that a train is not late is 0.85
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