Mathematics, 22.10.2021 20:10 shadow29916

In a random sample of 175 community college students, the mean number of hours spent studying per week is 13.7 hours and the standard deviation is 4 hours. Without assuming anything about the distribution of the number of hours community college students study per week, at least what percentage (approximately) of the students study between 7.3 and 20.1 hours per week?

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