Question
Download Solution PDFयदि स्वतंत्र यादृच्छिक चर X,Y को द्विपद रूप से क्रमशः n = 3, p = \(\dfrac{1}{3}\) और n = 5, p = \(\dfrac{1}{3}\) के साथ बंटन किया जाता है, तो (X + Y ≥ 1) की प्रायिकता है:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिया गया है:
यदि स्वतंत्र यादृच्छिक चर X,Y को द्विपद रूप से बंटन किया जाता है तो इसका अर्थ है
X ~ B(n, p)
X ~ B(3, 1/3) और Y ~ B(5, 1/3)
यहां, B = द्विपद बंटन
n = प्रेक्षणों की संख्या
p = प्रायिकता
गणना:
चूंकि X और Y स्वतंत्र द्विपद यादृच्छिक चर हैं जिनमें p1 = p2 है = 1/3
द्विपद बंटन का गुण जोड़ने पर
⇒ X + Y ~ B(3 + 5, 1/3)
⇒ X + Y ~B(8,1/3)
हम जानते हैं कि, P(X + Y ≥ γ) = 8Cr(1/3)r(2/3)8 - r
⇒ P(X + Y ≥ 1) = 1 - P( X + Y < 1)
⇒ 1 - P(X + Y = 0)
∴ 1 - (2/3)8
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