11.) The chart below gives daily revenue of an ice cream truck and the temperature outside: Sales $ 450 680 900 1000 560 120 34 120 33 Temp 70 85 88 94 78 67 50 65 54 a.) Calculate / and at o=0.05, determine if there is linear correlation. b.) If there is linear correlation, find the regression line. c.) Predict the temperature outside if the truck made $600. Find the prediction interval for your prediction.\fSe 11b.)Line: 11c.)y= Conclusion: ta/2= CI