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Evgesh-ka [11]
2 years ago
9

Joses went on a cruise to the Bahamas. His total cost for the trip is $810.

Mathematics
1 answer:
slega [8]2 years ago
3 0

Answer:

4

Step-by-step explanation:

yep 4 days cuz logicaly

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Consider two medical tests, A and B for a virus. Test A is 90% effective at recognizing the virus when it is present, but has a
Licemer1 [7]

1

P(V|A) is not 0.95. It is opposite:

P(A|V)=0.95

From the text we can also conclude, that

P(A|∼V)=0.1

P(B|V)=0.9

P(B|∼V)=0.05

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What you need to calculate and compare is P(V|A) and P(V|B)

P(V∩A)=P(A)⋅P(V|A)⇒P(V|A)=P(V∩A)P(A)

P(V∩A) means, that Joe has a virus and it is detected, so

P(V∩A)=P(V)⋅P(A|V)=0.01⋅0.95=0.0095

P(A) is sum of two options: "Joe has virus and it is detected" and "Joe has no virus, but it was mistakenly detected", therefore:

P(A)=P(V)⋅P(A|V)+P(∼V)⋅P(A|∼V)=0.01⋅0.95+0.99⋅0.1=0.1085

7 0
3 years ago
Which of the expressions are equivalent to the one below? Check all that
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Answer:

Only B,

Step-by-step explanation:

Because it is all addition it does not mater what order they are in,..

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Could you maybe provide us with a better explantion or picture?
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Step-by-step explanation:

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