Neuroscientists conducted research in a Canadian prison to see whether solitary confinement affects brain wave activity [Changes

Neuroscientists conducted research in a Canadian prison to see whether solitary confinement affects brain wave activity [€œChanges in EEG Alpha Frequency and Evoked Response Latency During Solitary Confinement,€ Journal of Abnormal Psychology 1972, Vol. 7, pp. 54€“59]. They randomly assigned 20 inmates to two groups, assigning half to solitary confinement and the other half to regular confinement. The data follow:

(a) Is a paired t -test appropriate for testing whether the mean alpha wave frequencies are the same in the two groups? Explain.

(b) Perform an appropriate test.

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Nonconfined Confined 10.7 9.6 10.7 10.4 10.4 9.7 10.9 10.3 10.5 9.2 10.3 9.3 9.6 9.9 11.1 9.5 11.2 9.0 10.4 10.9