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MHT CET202121 Sep 2021Evening ShiftMathematicsStatisticsActual

For X B ( n , p ) , if p =0.6, E ( X )=6 , then Var ( X )=

Options

  1. A6.6
  2. B24
  3. C2.4
  4. D6

Correct answer

C. 2.4

Step-by-step solution

We have p=0.6 and n p=6 n=10 Var ( X )= npq =(10)(0.6)(0.4)=2.4

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