STATISTICS

Answer the given problem. Analyze what tool should be used.

Does sensory deprivation have an effect on a person's alpha-wave frequency? Twenty volunteer subjects were randomly divided into two groups. Subjects in group A were subjected to a 10-day period of sensory deprivation, while subjects in group B served as controls. At the end of the experimental period, the alpha-wave frequency component of subjects' electroencephalograms was measured. The results were as follows:

Group A	10.2	9.5	10.1	10.0	9.8	10.9	11.4	10.8	9.7	10.4
Group B	11.0	11.2	10.1	11.4	11.7	11.2	10.8	11.6	10.9	10.9

Follow the steps in solving the problem, namely:

1. Hypothesis ex. H0: = 9.0 H1: 9.0 2. Level of significance ex. = 0.01 3. Test Statistic ex. z = x - 0 / / n 4. Critical Region ex. graph and /2 = +-0.025 5. Computation ex. compute using formula 6. Decision ex. accept H0 since the computed z-value falls in the region of acceptance. 7. Conclusion ex. there is no reason to believe the ...