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PuppyLover3479
22.09.2020 •
Mathematics
From the following list of hypothetical situations, identify those that are independent events using the given probabilities of each event and the formal definition of independence.
A. In a yearly highway study, 40% of the drivers were speeding, 10% of the drivers got into an accident, and 5% of the drivers were speeding and got into an accident.
B. In a yearly study of an animal shelter, 54% of the animals were adopted, 52% of the animals were dogs, and 33% of the animals were adopted and were dogs.
C. In a yearly weather survey of a city, 32% of the days had precipitation, 25% of the days were weekend days, and 8% of the days had precipitation and were weekend days.
D. In a college course survey, 20% of students received an A in chemistry, 25% of students received an A in biology, and 5% of students received an A in both chemistry and biology.
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Ответ:
a)
V=p+prt
now we solve for P
V=P (1+rt)
Divide both sides by (1+rt)
P=V÷(1+rt)...answer
b)
P=V÷(1+rt)
P=3,000÷(1+0.06×5)
P=2,307.69