Q. 104.5( 11 Votes )

A person buys a l

Answer :

(a) In this question, let X represents the number of prizes winning in 50 lotteries and the trials are Bernoulli trials

Here clearly, we have X is a binomial distribution where n = 50 and


Thus,






Hence, probability of winning in lottery atleast once


= 1 – P (X <1)


= 1 – P (X = 0)





(b) Probability of winning in lottery exactly once





(c) Probability of winning in lottery atleast twice


= 1 – P (X < 2)








=


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