Printable worksheet ยท 4 of 4
Check whether the condition changes probability - Paper 4
Read the information, then answer the questions. An adult may read the instructions aloud. Show your working where asked.
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Choose one record uniformly from this complete two-way table. Counts: A and B=5; A and not B=5; not A and B=5; neither=5. Every record appears once, with no missing categories. Compare unconditional P(B) with P(B given A); the condition changes the denominator to the A group.
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