A motorist does a survey at some traffic lights on his way back to work everday. He finds that the probability that teh lights are 'red' when he arrives is $0.24$ . What is the probability that the lights are not 'red'?

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Solution

$\begin{matrix} P r o b a b i l i t y t h a t l i g h t i s n o t r e d = 1 - p r o b a b l i l i t y t h a t l i g h t i s r e d = 1 - 0 .24 = 0 .76 \end{matrix}$

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A motorist does a survey at some traffic lights on his way back to work everday. He finds that the probability that teh lights are 'red' when he arrives is 0.24. What is the probability that the lights are not 'red'?

Probabilitythatlightisnotred=1−probablilitythatlightisred=1−0.24=0.76

A motorist does a survey at some traffic lights on his way back to work everday. He finds that the probability that teh lights are 'red' when he arrives is $0.24$ . What is the probability that the lights are not 'red'?

$\begin{matrix} P r o b a b i l i t y t h a t l i g h t i s n o t r e d = 1 - p r o b a b l i l i t y t h a t l i g h t i s r e d = 1 - 0 .24 = 0 .76 \end{matrix}$