Can the age of a cow be used to predict its milk production? The ages of eight cows (in years) and their milk production (in gallons per week) are shown below: Age 4 6 7 7 8 10 11 Milk Production 37.0 35.4 33.3 35.6 32.3 33.7 32.1 29.6 A regression analysis is conducted and the equation of the least squares regression line is found to be 3') : 39.297 0.79613. It is also determined that 73.2% of the variation in milk production can be accounted for by age. We also calculate 2(9)- (t-)2 : 7.90 and 2(1m 5:)2 = 44.9. 30. What is the sample correlation between age and milk production? (A) 0.536 (B) 0.732 (C) 0.796 (D) 0.856 (E) 0.892 31. A 90% condence interval for the parameter [)'1 in the linear regression model is: (A) (1.018,0.574) (B) (1.129,0.463) (C) (1.240,0.352) (D) (1.351,0.241) (E) (1.462,0.130) 32. We conduct a hypothesis test of H9: [31 = 0 vs. Ha: [3'1