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pls show work Find Chebyshev's theorem. 19. Cost of a Man's Haircut The average cost of a man's haircut is $21. The standard deviation is

pls show work

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Find Chebyshev's theorem. 19. Cost of a Man's Haircut The average cost of a man's haircut is $21. The standard deviation is $4. If the variable is approximately bell-shaped, within what limits would 68% of the haircut cost? 25. Check each data set for outliers. Draw a boxplot and fences on your number line for each data set

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