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# A trainer is teaching a dolphin to do tricks. The probability that the dolphin successfully performs the trick is 0.

A trainer is teaching a dolphin to do tricks. The probability that the dolphin successfully performs the trick is 0.35. If 25 attempts were made to teach the dolphin

(i) Find the mean of the binomial distribution.

(ii) Find the variance of the binomial distribution.

(iii) Out of 25 attempts find the probability that the dolphin succeeds 12 times.