To find the proportion of times something occurs, we divide the count (often a binomial random variable)

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To find the proportion of times something occurs, we divide the count (often a binomial random variable) by the number of trials n. Using the formula for the mean and standard deviation of a binomial random variable, derive the mean and standard deviation of a proportion resulting from n trials and probability of success p.

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Let X be a binomial random variable with n trials and probability of success p an...View the full answer

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