The number of hours per day a college student spends on homework has a mean of 6 hours and a standard deviation of 1.25 hours. Yesterday she spent 3 hours on homework. How many standard deviations from the mean is​ that? Round your answer to two decimal places.       Question content area bottom Part 1   A. 1.20 standard deviations below the mean   B. 2.40 standard deviations above the mean   C. 2.40 standard deviations below the mean   D. 1.20 standard deviations above the mean

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