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Probability Distributions 2 Mark Book Back Question Paper With Answer Key

12th Standard

    Reg.No. :
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Maths

Time : 00:30:00 Hrs
Total Marks : 6

    2 Marks

    3 x 2 = 6
  1. Three fair coins are tossed simultaneously. Find the probability mass function for number of heads occurred.

  2. Suppose two coins are tossed once. If X denotes the number of tails,
    (i) write down the sample space
    (ii) find the inverse image of 1
    (iii) the values of the random variable and number of elements in its inverse images

  3. Compute P(X = k) for the binomial distribution, B(n, p) where
    \(n=10, p=\frac{1}{5}, k=4\)

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