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2 answers:
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Answer with Step-by-step explanation:
We are given that
E=Event denote the event that the individual must stop at the first light
F=Event denote the event that the individual must stop at the second light
P(E)=0.4
P(F)=0.2
a.We have to find the probability that the individual must stop at atleast one light.
We know that
Substitute the value in the given formula then, we get
b.
c.We have to find the probability that the individual must stop at exactly one of the two lights.
P(must stop at exactly one of the two lights)=
P(must stop at exactly one of the two lights)=0.3
d.We have to find the probability that the individual must stop just at the first light.
P(must stop juts at the first light)=
P(must stop juts at the first light)=0.4-0.15=0.25
