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A histogram of quiz scores has bins with heights (frequencies): [0–20): 2, [20–40): 5, [40–60): 10, [60–80): 8, [80–100]: 5. What is the total number of students?
A histogram of quiz scores has bins with heights (frequencies): [0–20): 2, [20–40): 5, [40–60): 10, [60–80): 8, [80–100]: 5. What is the total number of students?