MHT CET 2022 Mathematics question
A bag contains 4 red and 3 black balls. One ball is drawn and then replaced in the bag and the process is repeated. Let X denote the number of times black ball is drawn in 3 draws. Assuming that at each draw each ball is equally likely to be selected, then the probability distribution of X is given by
Answer: (D)
Solution
Drawing with replacement makes the 3 draws independent Bernoulli trials with and , so . . .
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