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anonymous
 one year ago
Consider the following scenario:
• Let P(C) = 0.2
• Let P(D) = 0.3
• Let P(C  D) = 0.4
Find P(D  C)
Find P(C AND D).
anonymous
 one year ago
Consider the following scenario: • Let P(C) = 0.2 • Let P(D) = 0.3 • Let P(C  D) = 0.4 Find P(D  C) Find P(C AND D).

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0First you want to find C and D, which is the same as D and C

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[ \Pr(CD ) = \frac{\Pr(\underbrace{C\cap D}_{C\text{ and } D})}{\Pr(D)} \]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0This equation gets manipulated into: \[ \Pr(CD)\cdot \Pr(D) = \Pr(C\cap D) \]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0wait so "" is the same as saying "and?"

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0No, \[ \Pr(\underbrace{CD}_{C\text{ if/given }D}) \]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so it would be 0.12?

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0dw:1436240223932:dw

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0dw:1436240600971:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes, \(0.12\) works for C and D

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Divide that by \(\Pr(C)\) to get \(\Pr(DC)\).

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1\[P(CD)=\frac{P(C\cap D)}{P(D)}=\frac{P(C\cap D)}{.3}=.4\to P(C\cap D)=03\times .4=.12\]

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1then \[P(DC)=\frac{P(C\cap D)}{P(C)}=\frac{.12}{.2}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh cool makes sense thanks
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