Question
Download Solution PDFP(A) = 0.4, P(B) = 0.8 మరియు P(B|A) = 0.6 అయితే, P(A ∪ B) దీనికి సమానం:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFభావన:
A మరియు B అనే రెండు ఈవెంట్ల కోసం:
- P(A ∪ B) = P(A) + P(B) - P(A ∩ B).
- B ఇచ్చిన A యొక్క షరతులతో కూడిన సంభావ్యత ఇలా నిర్వచించబడింది: P(B|A) = \(\rm \dfrac{P(A\cap B)}{P(A)}\), P(A) > 0 అయినప్పుడు.
లెక్కింపు:
P(B|A) = \(\rm \dfrac{P(A\cap B)}{P(A)}\)సంబంధాన్ని ఉపయోగించి, మనం పొందుతాము:
0.6 =\(\rm \dfrac{P(A\cap B)}{0.4}\)
⇒ P(A ∩ B) = 0.24
ఇప్పుడు P(A ∪ B) = P(A) + P(B) - P(A ∩ B) సంబంధాన్ని ఉపయోగించి, మనం పొందుతాము:
P(A ∪ B) = 0.4 + 0.8 - 0.24 = 0.96.
Last updated on May 31, 2025
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