Question: Does temperature affect heart rate in humans? One way to address this question is to conduct an experiment. Take 20 test subjects and randomly split

Does temperature affect heart rate in humans? One way to address this question is to conduct an experiment. Take 20 test subjects and randomly split them into two groups of size 10 each: 10 to be placed in a cool (65°F) room and 10 to be placed in a warm (90°F) room. After 15 minutes, measure the pulse of each of the 20 individuals and compare the rates.
(a) Describe how one could conduct a similar study with the same 20 subjects, but using a paired design.
(b) What is the primary advantage of the paired design in this example?

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