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The music industry wants to know if the musical style on a CD influences how many illegal copies of it are sold. To achieve this purpose, the company chooses six cities randomly and writes down the number of illegal CDs available on the street categorized by music type: classic music, flamenco, heavy-metal, and pop-rock. The data are shown in the following table.

The music industry wants to know if the musical style on a CD influences how many illegal copies of...

(a) Use lattice/Trellis functions to create a box and whiskers plot and a density plot of the number of illegal CDs available for each music style.

(b) Are the distribution shapes similar?

(c) Are there significant differences in the numbers of CDs available according to musical style?

 
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