The following are the ranks of the ages (X) of 20 surgical patients and the dose (Y) of an analgesic agent required to block one spinal segment.

Rank of Age in Years (X)

Rank of Dose Requirement

(Y)

Rank of Age in Years (X)

Rank of Dose Requirement

(Y)

1 1 11 13 2 7 12 5 3 2 13 11 4 4 14 16 5 6 15 20 6 8 16 18 7 3 17 19 8 15 18 17 9 9 19 10 10 12 20 14 Compute rs and test (two-sided) for significance. Let a ¼ :05. Determine the p value for this test.