Question: Use the direct formulas for expected value and standard deviation to verify that the mean and standard deviation for a binomial random variable with n

Use the direct formulas for expected value and standard deviation to verify that the mean and standard deviation for a binomial random variable with n 5 2 and p 5 .5 are μ 5 1 and s 5 .7071, respectively. (Hint: The only possible values of X are 0, 1, 2. Find their probabilities and use the formulas at the end of Section 8.3.)

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