किसी उद्योग में एक बीमारी की घटना इस प्रकार है कि श्रमिकों को इससे पीड़ित होने की 20% संभावना है। यादृच्छिक रूप से चुने गए 6 श्रमिकों में से, 4 या अधिक श्रमिकों के बीमारी से पीड़ित होने की प्रायिकता क्या है?

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NDA-II 2024 (Maths) Official Paper (Held On: 01 Sept, 2024)
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  1. 53/3125
  2. 63/3125
  3. 73/3125
  4. 83/3125

Answer (Detailed Solution Below)

Option 1 : 53/3125
Free
NDA 01/2025: English Subject Test
30 Qs. 120 Marks 30 Mins

Detailed Solution

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व्याख्या:

दिया गया है

n = 6

⇒ p = P (बीमारी से पीड़ित) = 20/100 = 1/5

⇒ q = P (बीमारी से पीड़ित नहीं) = 1 - 1/5 = 4/5

⇒ p(x ≥ 4) = p(x = 4) + p(x = 5) + p(x = 6)

=

=

∴ विकल्प (a) सही है

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