1. Ford wants to compare mean assembly times for Explorer's at their 3 assembly plants. They observe random samples of 10 cars at each plant, and obtain the following summary statistics on assembly times (in minutes): Plant Mean Std. Dev. Atlanta 180 12 Chicago 185 10 Detroit 175 9 (a) Compute the between plant sum of squares and its degrees of freedom (b) Compute the within plant sum of squares and its degrees of freedom (c) Compute the test statistic and draw a conclusion using a significance level of = 0.05. Use the F-table to obtain the respective critical value and the approximate p-value. (d) Would you perform a Tukey test based on the previous result? Explain.