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Please help me with number 4, five and six how do I solve these? What to do? 4. For a normal random variable X with

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Please help me with number 4, five and six how do I solve these? What to do?

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4. For a normal random variable X with the mean u=1000 and o-25, find X, when the area between 950 and X is .41. 5-6 There are 4 RED boxes that contain 7 nickels and 3 quarters, and 6 GREEN boxes, that contain 5 nickels and 7 quarters. A coin is drawn randomly from one of the boxes. What is the probability that selected coin is quarter? If it is nickel, what is probability that it is taken from RED box

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