6. American Highway Safety Administration show that on an average weekend night, 1 out of every 8 drivers on the road is drunk. If 448 drivers are randomly checked next Saturday night, what is the probability that the number of drunk drivers will be (a) less than 42? (b) more than 70? (c) at least 30 but less than 50?
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Answer:
It is 56 drivers
Step-by-step explanation:
1/8 are drunk
and 448 are checked
∴ (1/8) x 448
= 56
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