Below is a 6 × 8 array containing the ages of moviegoers. treat this as a population. 32 34 33 12 57 13 58 16 23 23 62 65 35 15 17 20 14 11 51 33 31 13 11 58 23 10 63 34 12 15 62 13 40 11 18 62 64 30 42 20 21 56 11 51 38 49 15 21 (a) what was the proportion of all 48 moviegoers who were under age 20? (round your answer to 2 decimal places.)