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On a standardized test of mathematical ability, Kim scored a 40, and John scored a 20.60. The distribution of test scores for the population is

On a standardized test of mathematical ability, Kim scored a 40, and John scored a 20.60. The distribution of test scores for the population is normal, with a mean of 33 and a standard deviation of 6.3.

The percentage of the population that scored between Kim and John is __________.

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