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MHT CET202121 Sep 2021Morning ShiftMathematicsStatisticsActual

In a meeting 60 % of the members favour and 40 % oppose a certain proposal. A member is selected at random and we take X =0 if the opposed and X =1 if he is in favour, then Var X =

Options

  1. A0.36
  2. B0.24
  3. C0.6
  4. D0.06

Correct answer

B. 0.24

Step-by-step solution

From the given data, we write Variance = p _ i x _ i ^2- ( p _ i x _ i )^2=0.6-(0.6)^2=0.6-0.36=0.24

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