The probability that Aiko drives without seeing a red light is the likelihood of not seeing the red light
The odds against Aiko driving to work without seeing a red light is 7 : 1
The probability of not having to stop at a red light is given as:
P(Not Stop) = 0.125
The probability that he would stop at a traffic light is calculated using:
P(Stop) = 1 Â - 0.125
Evaluate
P(Stop) = 0.875
The odds against Aiko driving to work without seeing a red light is calculated using:
Odd = P(Stop) : P(Not stop)
So, we have:
Odd = 0.875 : 0.125
Simplify
Odd = 7 : 1
Hence, the odds against Aiko driving to work without seeing a red light is 7 : 1
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