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MHT CET202311 May 2023Morning ShiftMathematicsProbabilityActual

From a lot of 20 baskets, which includes 6 defective baskets, a sample of 2 baskets is drawn at random one by one without replacement. The expected value of number of defective basket is

Options

  1. A0.6
  2. B0.06
  3. C0.006
  4. D1.07

Correct answer

A. 0.6

Step-by-step solution

Let X denotes the number of defective baskets. Possible values of X are 0,1,2 . Now, selection of baskets is done without replacement, we get P(X=0)= 14 20 13 19 = 182 380

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