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3 years ago

Given: AD diameter of Circle P.

Mathematics

2 answers:

Vsevolod [243]3 years ago

6 0

90 degree............

Greeley [361]3 years ago

4 0

Answer:

Option B $90\°$

Step-by-step explanation:

we know that

The inscribed angle is half that of the arc it comprises.

In this problem the inscribed angle is the measure of angle B

$m$

we have that

$arc\ AD=180\°$ -----> the diameter divide the circle into two equal parts

substitute

$m$

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Answer:

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g Bonus: Assume that among the general pediatric population, 7 children out of every 1000 have DIPG (Diffuse Intrinsic Pontine G

patriot [66]

Answer:

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Step-by-step explanation:

From the information given:

7 children out of every 1000 children suffer from DIPG

A screening test designed contains 98% sensitivity & 84% specificity.

Now, from above:

The probability that the children have DIPG is:

$\mathbf{P(positive) = P(positive \ | \ DIPG) \times P(DIPG) + P(positive \ | \ not \DIPG)\times P(not \ DIPG)}$ $= 0.98\imes( \dfrac{7}{1000}) + (1-0.84) \times (1 - \dfrac{7}{1000})$

= (0.98 × 0.007) + 0.16( 1 - 0.007)

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So, the probability of not having DIPG now is:

$P(not \ DIPG \ | \ positive) = \dfrac{ P(positive \ | \ not DIPG)\timesP(not \ DIPG)} { P(positive)}$

$=\dfrac{ (1-0.84)\times (1 - \dfrac{7}{1000}) }{ 0.16574}$

$=\dfrac{ 0.16 ( 1 - 0.007) }{0.16574}$

= 0.9586

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3 years ago