3. Let be a random variable with mean = 10 and standard deviation = 5 (normality is not specified). If is the sum of 20 independent observations of, a. What is the approximate distribution of? b. What is the approximate distribution of? c. What is the mean and standard deviation of?
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The mean of the sum of 20 independent observations of X is simply the sum of the means of each observation, which is: mean of 20X = 20 * mean of X = 20 * 10 = 200 The variance of the sum of 20 independent observations of X is the sum of the variances of each Show more…
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