Ononot — A box plot for test scores shows: Q1 = 60, Median = 72, Q3 =

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A box plot for test scores shows: $Q_1 = 60$ , Median = 72, $Q_3 = 84$ . Which statements are definitely true?

I. Exactly 50% of scores are between 60 and 84. II. Exactly 25% of scores are below 60. III. The mean is less than 72.