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Question 11 8 pts Use the following information to find the Standard deviation of the random variable. *P(:) P(x) 0.4 0.1 P(x) -08 1.6 0.0

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Question 11 8 pts Use the following information to find the Standard deviation of the random variable. *P(:) P(x) 0.4 0.1 P(x) -08 1.6 0.0 0.3 0.3 0.2 NOTE: Round your answer to TWO decimal places? Question 12 6 pts Use the following data to find a 99% confidence interval for the true mean. X = 20, n=100, 0 = 4 veo

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