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Pragyan
Answers (2)
i have 13 marbles tom has 13 x 2 = 26 marbles bill has 26 x 2 = 52 marbles hence 3 of us have 13+26+52 = 91 marbles
probability that the women was unmarried = p = 0.25 probability that she was married = q = 1-p = 0.75 sample size , n = 10 mean = np = 10 x 0.25 = 2.5 standard deviation = sq. root (npq) =1.37
