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The probability that a person recovers from a disease is 0.8. What is the probability that exactly 2 persons out of 5 will recover from the disease?

Options

  1. A0.00512
  2. B0.02048
  3. C0.2048
  4. D0.0512

Correct answer

D. 0.0512

Step-by-step solution

P( recover from disease )=0.8= 4 5 So, required probability = ^5 C ₂ ( 4 5 )^2 (1- 4 5 )^3= 5 4 2 16 25 1 125 =0.0512

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