The file Bulbs contains the life (in hours) of a sample of forty 6-watt light emitting diode (LED) light bulbs produced by Manufacturer A and a sample of forty 6-watt light emitting diode (LED) light bulbs produced by Manufacture B.
a. Construct a frequency distribution and a percentage distribution for each manufacturer, using the class interval widths for each distribution on page 54.
Manufacturer
Manufacturer
b. Construct cumulative percentage distributions.
c. Which bulbs have a longer life-those from Manufacturer A or Manufacturer B? Explain.
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