35 Copy the content within the borders to your exam document (PICTURE) and SIZE TO FIT ON THE PAGE. (e) Compute a 95% confidence interval for the average time for 36 a trip of 80 miles requiring 4 deliveries, and a 95% prediction 37 interval for the delivery time for a trip with those characteristics. 5e 95% confidence interval 38 2 Lower limit 39 (f) Management believes that knowing whether a trip involves Upper limit 40 traveling on a highway during rush hour might improve the 41 prediction of trip time. Beginning with your model in part (a), 2 95% prediction interval build a regression model to be able to include the "Highway" Lower limit effect in the estimation of trip time. Copy the the regression 43 report to the answer box. Interpret every regression coefficient Upper limit 44 in your new model, explaining what it tells us in the context. 45 Explain why the manager is or is not correct. Show the support for your answers in part (f) 46 1 47 (g) Augment your model in (f) to include a variable to measure 48 the interaction between Highway and Deliveries. Paste (values) 49 the bottom section of the regression report to the answer box. Is there a significant interaction effect at the 10% level of 50 significance? Carefully explain what you can conclude as a result 51 2 f of performing your hypothesis test. Model report (Regression table below ANOVA table only) 52 53 54 55 56 57 58 59 2 Interpretation of the 3 regression coefficients: 60 62 63 64 1 Why is the manager correct or incorrect? 65 66 67 2 g Model report (regression table below ANOVA table only) 68