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

(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.

Question

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
​
(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.

Quizplus · Accepted Answer

The Answer of 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
​
(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.

An Experiment Was Performed to Determine Which Brand of Comparably