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Statistics - Histograms

Please construct a Histogram using this information. also show relative frequencies and show class boundaries and height.
Please do the class boundaries , relative frequencies and height on the table ,then do the histogram , Thank you

Intervals Frequencies
1-2 20

3-5 30

6-8 35

9-11 15

Solution Summary

Neat, step-by-step solution is provided, Histograms drawn.