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A population of values has a normal distribution with 18 4 and a 41 4...

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A population of values has a normal distribution with 18 4 and a 41 4 a Find the probability that a single randomly selected value is less than 19 Round your answer to four decimal places P X 19 b Find the probability that a randomly selected sample of size n 197 has a mean less than 19 Round your answer to four decimal places P M 19

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