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Scores on a test have a mean of 76, and Q3 is 78.6. The scores have a distribution that is approximately normal. Find P9

Posted: Wed Jul 06, 2022 12:16 pm
by answerhappygod
Scores on a test have a mean of 76, and Q3 is 78.6. The scoreshave a distribution that is approximately normal. Find P90 (youwill need to find the standard deviation first)