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AP EAMCET2001MathematicsProbability

For a binominal variate X , if n=4 and P(X=4)=6 P(X=2) , then the value of p is

Options

  1. A3 7
  2. B4 7
  3. C6 7
  4. D5 7

Correct answer

C. 6 7

Step-by-step solution

We have, array rlrl & P(X & =4)=6 P(X=2) & & ^4 C₄ p^4 q^0 & =6 ^4 C₂ p^2 q^2 & & p^2 & =36 q^2 & & p & =6 q=6(1-p) p & = 6 7 array

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