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Need step by step solution, will upvote. 3. [9 points] A random variable X is N{1000, 50). Find the probability that (a) X is between

Need step by step solution, will upvote.

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3. [9 points] A random variable X is N{1000, 50). Find the probability that (a) X is between I900 and 1050. (b) X is less than 900 er X is greater than 1050. (e) X is either between 950 and 990 or between 1020 and 1050

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