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Mathematics 12 Online
OpenStudy (anonymous):

Upon waking each morning, Kara monitors her resting heart rate and records this information for nine days. Day 1 65 Day 2 75 Day 3 72 Day 4 69 Day 5 72 Day 6 70 Day 7 72 Day 8 75 Day 9 67 The spread of her resting heart rates is 4 beats per minutes 8 beats per minutes 5 beats per minutes 10 beats per minutes

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