6. Consider the data summarized in the R output below. Find the missing count (i.e., the value of x in the last row). count ? 4 ? [0,5) [5, 10) [10, 15) [15, 20) X cumpct 8.00 24.00 52.00 100.00 (a) 25 (b) 12 (c) 8 (d) 7 (e) 5

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