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Imagine a normal distribution of test scores with a mean equal to 80 and a standard deviation equal to 15. What would be the percentile

Imagine a normal distribution of test scores with a mean equal to 80 and a standard deviation equal to 15. What would be the percentile ranking of someone who scored a 55? (The answer will be between zero and ninety-nine; and should be reported to the tenths place. Do not include a percentage sign)

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