The x values - percentage of the population with at least four years of higher education. The y values= percentage of growth in per capita income. X y 9.9 37.1 11.4 43.0 8.1 14.7 33.4 47.1 The sample correlation coefficient r is 0,887. Now we test the population correlation coefficient p. Remember that x rep- resents percentage college graduates and y represents percentage salary increases in the general population. We suspect the population correlation is positive, p > 0. Let's use a 1% level of significance: Ho: p= 0 (nolinear correlation) H: p>0 (positive linear correlation). The intervall containing the P-value is? 8.5 12.6 26.5 40.2