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Suppose the average weight for adult males (age 18 or older) in Alachua County is 190 lbs with a standard deviation of 20. Now suppose we take a random sample of 143 adult males (age 18 or older) in Alachua County. What is the probability that the average weight of our 143 subjects is bigger than 193 lbs?

How do I set this up, and use a Z-score. I can look it up in the table, I just want the steps and the math done out.

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