Question: Preliminary data analyses indicates that use of a paired Wilcoxon signed-rank test is reasonable.

The systolic blood pressure readings of ten subjects before and after following a particular diet for a month are shown in the following table.

Subject Before After

At the 1% level of significance, do the data provide sufficient evidence to conclude that the

diet has an effect on systolic blood pressure?

1. What is the p-value for this test?
2. What is your decision (Reject/Fail to reject)?

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