6. An environmental science student has found a correlation of +0.63 between yearly rainfall totals and tomato crop surpluses (in tons). Given this knowledge, you would expect that: a. There is no relationship between yearly rainfall totals and tomato crop surpluses b. You could perfectly predict how much tomato crop surplus there would be given a yearly rainfall total c. As the yearly rainfall total increases, tomato crop surplus decreases d. As the yearly rainfall total increases, tomato crop surplus increases 7. Which of the following represents the weakest relationship? a. -0.09 b. -0.32 c. -0.77 d. +0.13 8. Research shows that there is a -.97 correlation between Mexican lemon imports and number of highway deaths. This means that: a. The greater number in Mexican lemons that are imported, the greater the number of highway deaths The fewer Mexican lemons that are imported, the fewer the number of highway deaths Mexican lemon imports causes signicantly decreased number of highway deaths Mexican lemon imports is strongly negatively related to number of highway deaths 999' 9. If25% of the variability in some criterion (Y variable) is explained by a predictor Oi variable), this means that the correlation between the two variables is: a. 0.25 b. 0.75 c. 0.065 d. 0.5 10. For Chi-square tests, decreasing the alpha level from .05 to .01 will: a. Make it easier to reject the null hypothesis b. Make it more diicult to reject the null hypothesis c. Increase the degrees of freedom d. Change the test statistic