E Homework: Section 14.EOC Homework Question 10, 14.EOC.70-E HW Score: 4.02%, 0.52 of 13 points Part 1 of 6 Score: 0.25 of 1 Save Suppose a teacher recorded the attendance of her students in a recent statistics class because she wanted to investigate the linear relationship between the number of classes they missed and their final grades. The accompanying table shows these data for a random sample of nine students. Complete parts a through c. EffClick the icon to view the table showing missed classes and final grade. Table of missed classes and final grades Missed Classes Final Grade 76 78 92 71 97 86 ON 88 94 a. Calculate the correlation coefficient for this sample. The correlation coefficient is Type an integer or decimal rounded to three decimal places as needed.) b. Using a = 0.05, test to determine if the population correlation coefficient is less than zero. The hypotheses for this test are The test statistic is Type an integer or decimal rounded to two decimal places as needed.) The p-value is (Type an integer or decimal rounded to three decimal places as needed.) Therefore, at the 0.05 level of significance, the null hypothesis. There sufficient evidence to conclude that the population correlation coefficient is zero. c. What conclusions can be made based on these results? The conclusion is that there linear relationship between missed classes and final grade.Homework: Section 14.EOC Homework Question 11, 14.EOC.71-E , HW Score: 2.1%, 0.27 of 13 points Part 1 of 7 Score: 0 of 1 Save Suppose a teacher recorded the attendance of her students in a recent statistics class because she wanted to investigate the linear relationship between the number of classes they missed and their final grades. The accompanying table shows these data for a random sample of nine students. Complete parts a through d. Click the icon to view the table showing missed classes and final grade. X Table of missed classes and final grades Missed Classes Final Grade 73 92 69 96 NOONOAND 92 88 96 a. Calculate the coefficient of determination. The coefficient of determination is (Type an integer or decimal rounded to three decimal places as needed.) b. Using a = 0.01, test the significance of the population coefficient of determination. The hypotheses for this test are The test statistic is (Type an integer or decimal roun Ho: p2 > 0 and H,: p? =0. The p-value is Ho: p2 = 0 and H,: p2 co. (Type an integer or decimal roun Ho: p2 =0 and H,: p2 2 0. fed. Therefore, at the 0.01 level of sic sufficient evidence to conclude that the coefficient of determination is Ho: p? *0 and H, : $2 =0. Sothesis. There zero. Hop? -0 and H,: p2 >0. Hop? 0 and H1 : B, SO. 8.5 9.4 8.5 7.6 Ho: By 0. 9.0 9.8 Ho: B, 20 and H, : B,
