Circadian Rhythms and Reaction Time
In a sleep study on circadian rhythms, the reaction times (in milliseconds) of eight participants were measured at four different times during a 24-hour period. The data are shown below.
8am: 245, 238, 242, 240, 236, 244, 241, 239
2pm: 236, 232, 235, 233, 230, 237, 234, 231
8pm: 248, 245, 247, 244, 242, 249, 246, 243
2am: 289, 285, 288, 286, 283, 290, 287, 284
What is the approximate percentage increase from the fastest mean reaction time to the slowest mean reaction time?
A
25.8%
B
21.2%
C
18.7%
D
22.7%
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