An Experiment Was Performed to Determine Which Brand of Comparably

Essay

An experiment was performed to determine which brand of comparably priced light bulbs, A or B, lasts longer on average. Ten bulbs of each brand were tested, and their lifetimes recorded in hours. The data are shown below:
Bulb A: 88, 97, 110, 122, 128, 129, 135, 141, 150, 165
Bulb B: 23, 55, 93, 106, 111, 115, 123, 128, 153, 171
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(a)Display these data using a comparative (back-to-back) stemplot.
(b)What are the differences and similarities in the lifetime distributions for the two samples?
(c)If your preference for brand A or B must be determined from the information in parts (a) and (b), which brand would you buy? Explain your choice using appropriate statistical terminology.