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21. A random variable X is normally distributed with a mean of 150 and a variance of 36. Given that X = 120, its corresponding
21. A random variable X is normally distributed with a mean of 150 and a variance of 36. Given that X = 120, its corresponding Z- score is 5.0.21. A random variable X is normally distributed with a mean of 150 and a variance of 36. Given that X = 120, its corresponding Z- score is 5.0.
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