The file contains the life (in hours) of a sample of 40 100-watt light bulbs produced by
Question:
Use the following class interval widths for each distribution:
Manufacturer A: 650 but less than 750, 750 but less than 850, and so on.
Manufacturer B: 750 but less than 850, 850 but less than 950, and so on.
a. Construct percentage histograms on separate graphs and plot the percentage polygons on one graph.
b. Plot cumulative percentage polygons on one graph.
c. Which manufacturer has bulbs with a longer life- Manufacturer A or Manufacturer B? Explain.
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Related Book For
Basic Business Statistics Concepts And Applications
ISBN: 9780132168380
12th Edition
Authors: Mark L. Berenson, David M. Levine, Timothy C. Krehbiel
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