Question: binomial distribution has p = 0 . 1 5 and n = 5 0 . ( i ) What is the mean and standard deviation?

binomial distribution has p =0.15 and n =50.(i) What is the mean and standard deviation?(ii) Is this a situation in which binomial probabilities can be approximated by the normal probability distribution? Explain.(iii) What is the probability of 20 or moresuccesses?

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