60. The article “A Dual-Buffer Titration Method for Lime Requirement of Acid Mine-soils” (J. of Environ. Qual., 1988:

452–456) reports on the results of a study relating to revegetation of soil at mine reclamation sites. With x
KCl extractable aluminum and y
amount of lime required to bring soil pH to 7.0, data in the article resulted in the following summary statistics: n
24,
x
48.15,
x2

155.4685,
y
263.5,
y2
3750.53, and
xy
658.455.

Carry out a test at significance level .01 to see whether the population correlation coefficient is something other than 0.