DocViewer Page 5. What is the minimum sample size (n) needed to find a correlation coefficient of +0.60 statistically significant for a two-tailed test at the 0.05 level? a. 9 b. 10 C. d. 12 e. Cannot be determined 6. The scatterplot to the right indicates a 8 8 a. Negative correlation. Variable Y b. Positive correlation. 40 .. . .. . 20 c. No correlation. d. Curvilinear correlation. 10 20 30 e. The correlation cannot be determined. Variable X 7. The regression equation for predicting height X (in feet) from age Y (in years) in a sample of children has a slope of 0.90 and an intercept of 0.60. Bobby is 4 years old. What is his predicted height? a. 3.3 feet b. 4.1 feet . 4.2 feet d. 4.54 feet e. None of the above 8. Which of the following correlations displays the strongest possible correlation? a. +2.70 b. -0.68 +0.85 1. -2.80 e. -0.90 9. What is the critical value of a two-tailed test for the correlation coefficient between age in months and reading ability for 22 first grade children at the 0.05 level? a. 0.423 b. 0.444 c. 0.492 d. 0.472 e. 0.404 10. The scores on an exam are normally distributed. The population mean of the exam is 80 with a population standard deviation of 12. Given this information, what score would represent 2 andard deviations above the mean. pag YK85e3GiQKFR--Y95nAkviZOq_IHqZMqDT953qplBTp_sqtg/view?theme=dark