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To monitor the number of blemishes on a polished surface a company randomly selects 10 units of output from its process and counts the number of blemishes on each unit. The sample results are shown below Sample No. 1 2 3 4 15 6 17 8 19 10 No. of 17 19 15 18 16 14 15 16 15 15 Blemishes Given the sample information above, the standard deviation of the number of defects for this process would be 0 4 0 8 O 10