Question 10 2.86 pts AutoTrader.com would like to test if a difference exists in the age of three different types of vehicles currently on the road: trucks, cars, and vans. The following data represent the age of a random sample of trucks, cars, and vans. Trucks Cars Vans 13 8 3 8 7 7 9 10 11 11 7 14 The grand mean for these observations is O 9.0 O 8.9 O 7.2 O 8.0Question 9 2.36 ots A researcher with the MinistP-f of Transportation is commissioned to study the drive times to work [oneway} for US. cities. The underlying hypothesis is that average commute times are different across cities. To test the hypoth esis. the researcher randomlyF selects six people from each of the four cities and records their oneway commute times to work. Refer to the below data on onewax.r commute times {in minutes] to work. Note that the grand mean is 35.3?5. Houston Charlotte .h U1 M U1 M U1 Ch U1 (.43 C3 (2.1 C" 'H-J U1 (all U1 U"| '4 C3 |"' to C3 H NO 85 U'1 CI CI ad CI to Ln 45'? 1.5? 304.16? 33:56? 4345.456? 24.333 82.16? WhiCh of the following is the sum of squared errors? T\" 4,185.83 6\" 141.5 5'\" 83116? 6"- 5.28 5.83 Question 11 2.86 pts When estimating y = bo + b1x1 + b2x2, the following regression results using ANOVA were obtained. df SS MS F Regression 2 210.9 105.5 114.7 esidual 17 15.6 0.92 otal 19 226.5 Coefficients Standard Error t-stat p-value itercept -1.6 0.57 -2.77 0.0132 -0.5 0.04 -15.11 2.77E-11 0.1 0.07 1.89 0.0753 Which of the following is the prediction of y, if x1 = 1 and x2 = 2? O -1.9 O 1.9 O -0.3 O 1.3