A team of researchers examines the time spent in REM sleep and in each of the NREM stages among a large sample of adults ranging in age from 18 to 70 years old.The researchers compute three correlation coefficients: Correlation A,between participant age and total time spent in NREM stages 1 and 2; Correlation B,between participant age and total time spent in REM sleep; and,finally,Correlation C,between participant age and total time spent in NREM stages 3 and 4.Of these correlations,which should be the weakest? Which should be the strongest?
A) Correlation B should be the weakest. Correlation A should be the strongest.
B) Correlation B should be the weakest. Correlation C should be the strongest.
C) Correlation C should be the weakest. Correlation A should be the strongest.
D) Correlation A should be the weakest. Correlation C should be the strongest.

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The Answer of A team of researchers examines the time spent in REM sleep and in each of the NREM stages among a large sample of adults ranging in age from 18 to 70 years old.The researchers compute three correlation coefficients: Correlation A,between participant age and total time spent in NREM stages 1 and 2; Correlation B,between participant age and total time spent in REM sleep; and,finally,Correlation C,between participant age and total time spent in NREM stages 3 and 4.Of these correlations,which should be the weakest? Which should be the strongest?
A) Correlation B should be the weakest. Correlation A should be the strongest.
B) Correlation B should be the weakest. Correlation C should be the strongest.
C) Correlation C should be the weakest. Correlation A should be the strongest.
D) Correlation A should be the weakest. Correlation C should be the strongest.

A Team of Researchers Examines the Time Spent in REM