APFIVE Circadian Rhythms and Reaction Time
In a sleep study examining circadian rhythm disruption, researchers measured participants’ reaction times (in milliseconds) at four different times during a 24-hour period. The data for 8 participants are:
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 percentage increase in mean reaction time from the fastest time of day to the slowest time of day?
A
21.2%
B
25.8%
C
18.7%
D
22.7%
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