Analysis of Successive REM Sleep Periods
A sleep study recorded the duration in minutes of four successive REM periods for ten participants. The data were as follows: 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); and Period 4 (25, 28, 26, 27, 25, 26, 27, 25, 26, 27). Based on these data, what is the mean difference in duration between consecutive REM periods?
A
7.2 minutes
B
6.67 minutes
C
5.7 minutes
D
6.5 minutes
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