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A random variable represents the number of successes in 30 Bernoullitrials, each with probability of success p=0.65. (A) Find the mean and standard deviation of

A random variable represents the number of successes in 30 Bernoullitrials, each with probability of success p=0.65.

(A) Find the mean and standard deviation of the random variable.

(B) Find the probability that the number of successes lies within 1 standard deviation of the mean.

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