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show all work please The hourly wages for a sample of part-time employees at a local Store are $12, $20, $16, $18, and $19. Determine

show all work please The hourly wages for a sample of part-time employees at a local Store are $12, $20, $16, $18, and $19. Determine the sample: (i) Mean (ii) Variance (iii) Standard deviation

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