SOLUTION: The city finds empirically that the probability that an automobile going through the intersection of 5th and Main will run a red light sometime during a given day is 8.9%, and the

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Question 1165866: The city finds empirically that the probability that an automobile going through the intersection of 5th and Main will run a red light sometime during a given day is 8.9%, and the probability that an automobile going through the intersection of 7th and Polk will run a red light sometime during a given day is 11.7%. Suppose a car is picked at random at 5th and Main on a given day and another at random at 7th and Polk. Write each probability as a percentage rounded to one decimal place.
What is the probability that the car will not run a red light at 5th and Main?
Answer by ikleyn(52920) About Me  (Show Source):
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The city finds empirically that the probability that an automobile going through the intersection
of 5th and Main will run a red light sometime during a given day is 8.9%, and the probability
that an automobile going through the intersection of 7th and Polk will run a red light sometime
during a given day is 11.7%. Suppose a car is picked at random at 5th and Main on a given day
and another at random at 7th and Polk. Write each probability as a percentage rounded to one decimal place.
What is the probability that the car will not run a red light at 5th and Main?
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This probability is     P = 1 - 0.089 = 0.911.

Rounded to one decimal place,  it is   0.9.         ANSWER


Solved.