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Discrete Random Variables (DRV) - Binomial Probabilities Using the Probability Mass Function

Discrete Random Variables (DRV) - Binomial Probabilities Using the Probability Mass Function

A biased coin such that the probability of obtaining a tail is \(0.7\). The biased coin is being tossed \(5\) times. Find the probability that

  1. exactly 3 tails are obtained,
  2. less than 2 tails are obtained,
  3. at least 2 tails are obtained.

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Answer:(i) \(0.309\) (ii) \(0.0308\) (iii) \(0.969\)

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