A Traffic Signal Is Green For 20 Seconds Then Amber For 5 Seconds Then Red For 30 Seconds. When You Reach The Signal What Is The Probability It Is:, A

A traffic signal is green for 20 seconds then amber for 5 seconds then red for 30 seconds. When you reach the signal what is the probability it is:

a. Green
b. Amber

Answer:

When you reach the traffic signal, there are 36% probability that it is green and 9% probability that it is amber.

Computation:

Solving for the base by getting the sum of all times given in seconds.

20+5+30=55

Solving for the probability of the following.

Green:\frac{20}{55}*100\approx0.36*100=36\%\\\\Amber:\frac{5}{55}*100\approx0.09*100=9\%


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