1.) In a binomial experiment, the probability of success in each trial is 0.45, and 30 trials are performed. Let X be the random variable which counts the number of successes. Find  the mean of X. 2.) In a binomial experiment, the probability of success in each trial is 0.45, and 30 trials are performed. Let X be the random variable which counts the number of successes. Find  the standard deviation of X.

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