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Simple Stats Z-score question?
Update:
Weight of people question:
Mean 82, standard deviation 18.
75% of all people are at least what weight?
Using the table, I get a z score of 0.67 or 0.68. So my answer is either 94.06 kg or 94.24 kg both of which were marked incorrectly. Am I doing something wrong?
0.68 = (x-82)/18 -? x=94.24
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