Question 7 20 pts Family transportation costs include car payments, insurance, fuel, repairs, parking, and public transportation. Five randomly-selected families in each of four major cities were asked to use their records to estimate a monthly figure for transportation cost. The monthly costs (in dollars) are summarized below. City Ji Si Atlanta 5 656.8 45.3 Chicago 5 572.2 83.1 SSTr = 548, 001.8 SSE = 57, 516.4 Los Angeles 5 788.0 49.4 New York 5 333.8 54.7 a. Is there convincing statistical evidence that the mean monthly transportation cost for all families is not the same for the four cities? Just show the appropriate mechanics and answer "yes" or "no." The conditions are nicely satisfied. b. Use the Tukey procedure with an overall 5% significance level to determine whether there's a difference between Atlanta and Chicago