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If the mean and standard deviation of a binomial distribution are 12 and 2 respectively. Then the value of its parameter p is

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If the mean and standard deviation of a binomial distribution are 12 and 2 respectively. Then the value of its parameter p is …

(a) 1/2

(b) 1/3

(c) 2/3

(d) 1/4

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Answer is (c) 2/3

np = 12

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