9:45 . e E} H everslty.blackboard.com @ Take Test: Learning Check 6.4 QUESTION 2 According to the data reported by the New York State Department of Health regarding West Nile Virus for the years 2000-2008, the least squares line equation for the number of reported dead birds (x) versus the number of human West Nile virus cases (y) is y=10.2638+0.0491x. If the number of dead birds reported in a year is 732, how many human cases of West Nile virus can be expected? Also we know r=0.5490. O No prediction can be made. 1 points Save Answer QUESTION 3 Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Save and Submit 9:45 I 7 [J' H eversity.blackboard.com h (9 Take Test: Learning Check 6.4 QUESTION 5 The following data (showing the number of hurricanes by category to directly strike the mainland U.S. each decade) obtained from www.nhc.noaia.'igo_v/gifs/lr:1ble6'.gLir A major hurricane is one with a strength rating of 3, 4 or 5. Total Number of Number of Major Decade Hurricanes Hurricanes 1941 - 24 10 1950 17 8 14 6 12 4 15 5 14 5 9 3 Table 17 The data for 2001 -2004 show 9 hurricanes have hit the mainland United States. The trend line predicts 2.72 major hurricanes to hit mainland U.S for 20012010. Can the trend line line be used to make this prediction? 0 No, because r is not significant even though the data shows a linear trend. Yes, because r is signicant from the major hurricane data. Also the data shows a linear trend. 0 No, because the data seems not to be linear and r is not significant. Yes, because how else could we predict what is going to happen this decade. 1 points Save Answer Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Save and Submit 9145 .I' r: [1' eversity.blackboard.com (9 Take Test: Learning Check 6.4 QUESTION 3 The following data (showing the number of hurricanes by category to directly strike the mainland US. each decade) obtained from www.nhc.noaa.go_v/gifs/table.g' A major hurricane is one with a strength rating of 3, 4 or 5. Total Number of Number of Major Decade Hurricanes Hurricanes 2 4 17 14 12 15 14 Using only completed decades (1941 2000), calculate the least squares line for the number of major hurricanes expected based upon the decade. 0 9=1.03x9.93 O 9=1.03x+9.93 O O=9.93x1.o3 O '9: l.03x+9.93 Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Save and Submit 9:45 II 7 [J' H eversity.blackboard.com h @ Take Test: Learning Check 6.4 QUESTION 4 The following data (showing the number of hurricanes by category to directly strike the mainland U.S. each decade) obtained from www.nhc.noaa.go_v/gii's/table6.gc A major hurricane is one with a strength rating of 3, 4 or 5. Total Number of Number of Major Decade Hurricanes Hurricanes 1941- 2 10 1950 4 1951- 17 8 1960 14 6 12 4 1981- 5 1990 1991- 14 5 2000 The correlation coefficient is -0.8549. Is this considered signicant? Why or why not? 0 Yes, because -0.855 is outside the interval with the critical value endpoints of j; 0.811. No, because -O.855 is inside the interval with the critical value endpoints of $0.811. O No, because 0.855 is outside the interval with the critical value endpoints of $0.811. Yes, because -0.855 is inside the interval with the critical value endpoints of 10.811. 1 points Save Answer Click Save and Submit to save and submit. Click Save AllAnswers to save all answers. Save All Answers Save and Submit 9:44 . e E} H eversity.blackboard.com @ Take Test: Learning Check 6.4 QUESTION 1 Data are collected on the relationship between the number of hours per week practicing a musical instrument and scores on a math test. The line of best fit is as follows: 9 = 72.5 + 2.8x. What would you predict the score on a math test would be for a student who practices a musical instrument for 10.5 hours a week? Round to one decimal place. 1 points Save Answer QUESTION 2 According to the data reported by the New York State Department of Health regarding West Nile Virus for the years 2000-2008, the least squares line equation for the number of reported dead birds (x) versus the number of human West Nile virus cases (y) is Click Save and Submit to save and submit. Click Save AllAnswers to save all answers. Save All Answers Save and Submit