APFIVE Analysis of Successive REM Sleep Periods
A sleep researcher collected data on the average duration of REM sleep periods throughout the night for 10 participants. The recorded durations (in minutes) for successive REM periods were: Period 1: 5, 8, 6, 7, 5, 6, 7, 5, 6, 7; Period 2: 10, 12, 11, 13, 10, 11, 12, 10, 11, 12; Period 3: 15, 18, 16, 17, 15, 16, 17, 15, 16, 17; Period 4: 25, 28, 26, 27, 25, 26, 27, 25, 26, 27. What is the mean difference in duration between consecutive REM periods?
A
7.2 minutes
B
5.7 minutes
C
6.67 minutes
D
6.5 minutes
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