Four balls are drawn from a bag containing 5 black, 6 white and 7 red balls. Let X is no. of white balls drawn. find the probability mass function or probability distribution of X
Answer (1)
21st Jan, 2021
Hello candidate,
In the given question, mention that a bag contains 5 black, 6 white, and 7 red balls out of which 4 balls are drawn at random.
Let X equal to 0, so the probability distribution will be-12C4, where C refers to combination.
Let X equal to 1, so the probability distribution will be- 6C1 ×12C3, where C refers to combination.
Let X equal to 2, so the probability distribution will be- 6C2 ×12C2, where C refers to combination.
Let X equal to 3, so the probability distribution will be- 6C3 ×12C1, where C refers to combination.
Let X equal to 4, so the probability distribution will be- 6C4, where C refers to combination.
Hope that it helps!!
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