Conditional probability - PowerPoint PPT Presentation
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Conditional probability
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Conditional probability M=Math test was .73 F= French test was .65 Neither M or F = .08 1st find Combined Probability M=Math test was .73 F= French test was .65 ... – PowerPoint PPT presentation
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Title: Conditional probability
1
Conditional probability
- MMath test was .73
- F French test was .65
- Neither M or F .08
2
1st find Combined Probability
- MMath test was .73
- F French test was .65
- Neither M or F .08
- Combined formula
- P(M n F) P(M) P(F) P (MUF)
- .46 .73 .65 - .92
- Next is conditional
.08
.27
.19
.46
M
F
N
3
Conditional probability
- Two steps
- find combined probability
- P(M n F) P(M) P(F) P (MUF)
- .46 .73 .65 - .92
- Calculate conditional Probability
- P(A B) Combined/P(second event)
- .46/.65 .708 passed both
