Show all steps Eight people were asked to perform a simple puzzle-assembly task
ID: 3238303 • Letter: S
Question
Show all steps
Eight people were asked to perform a simple puzzle-assembly task under normal conditions and under stressful conditions. During the stressful time, a mild shock was delivered to subjects 3 minutes after the start of the experiment and every 30 seconds thereafter until the task was completed. Blood pressure readings were taken under both conditions. The data in the table are the highest readings during the experiment. Do the data present sufficient evidence to indicate higher blood pressure readings under stressful conditions? Analyze the data using the Wilcoxon signed-rank test for a paired experiment.Explanation / Answer
Ho: M=0 VS H1: M >0
Wilcoxon Signed Rank Test: Stressful-Normal
Test of median = 0.000000 versus median > 0.000000
N for Wilcoxon Estimated
N Test Statistic P Median
Stressful-Normal 8 7 24.5 0.045 2.500
Conclusion: The estimated p-value is 0.045 and less than 0.05 level of significance. Hence, we can not accept the null hypothesis and conclude that the blood pressure of stressful condition is higher than normal condition at 0.05 level of significance.
Normal Stressful Stressful-Normal 126 130 4 117 118 1 115 125 10 118 120 2 118 121 3 128 125 -3 125 130 5 120 120 0