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Ghella [55]
3 years ago
6

Someone help me please.

Mathematics
1 answer:
zhenek [66]3 years ago
5 0
I did the answers on the picture.

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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

P(V)=0.01

P(∼V)=0.99

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
18m + (-13m) = 25 m=
Levart [38]

Answer:

m=0

Step-by-step explanation:

i think?

7 0
3 years ago
find the column which has products that are the sum of the yellow shaded numbers in each row Shaded the column what pattern do y
BaLLatris [955]

Answer:

They are even numbers (divisible by two)

Step-by-step explanation:

The number column starts from 2 and is incremented by two for every number in the column. The remainder of the division of each number in the sequence is zero and the result of the division is sequence 1,2,3,4,5,6,7...

Therefore, the numbers in the column are even numbers.

6 0
3 years ago
On a piece of paper graph the system of equations. Then determine which answer choice matches the graph you drew and identify th
PSYCHO15rus [73]

Answer:

I think you meant for the plus sign in the second problem to be an = sign so the equation looks like this y=-x+4

If so your answer is A the first graph

I graphed it on desmos calculator


6 0
3 years ago
Read 2 more answers
What is .9898 as a fraction
AysviL [449]
98 98/100 because you move the decimal point over 2 times
3 0
3 years ago
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