Finding P(D) given 3 equations

dxoo

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Jul 16, 2020
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Given:
[MATH] P(C) = 3/7\\ P(D|C') = 2/5\\ P(D'|C) = 3/4\\ [/MATH]
How would I find the probability of even D occurring?

I've tried writing the given equations differently but I got stuck finding D intersect C'.
Any help is appreciated.
 
Given:[MATH]P(C) = 3/7\\ P(D|C') = 2/5\\ P(D'|C) = 3/4\\[/MATH]How would I find the probability of even D occurring?
\(\mathcal{P}(D|C')=\dfrac{\mathcal{P}(D\cap C')}{\mathcal{P}(C')}\) then \(\mathcal{P}(D\cap C')=\dfrac{4}{7}\cdot\dfrac{2}{5}=\dfrac{8}{35}\)
Use that as a model and finish it off.

HINT: \(\mathcal{P}(D\cap C)=\mathcal{P}(C)-\mathcal{P}(D'\cap C)\)
 
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