a. Use these data to test whether the population mean times for mixing a batch of material differ for the three manufacturers. Use =0.05. Compute the values below (to 2 decimals, if necessary). Sum of Squares, Treatment Sum of Squares, Error Mean Squares, Treatment Mean Squares, Error Calculate the value of the test statistic (to 2 decimals). The p-value is What is your conclusion? Conclude the mean time needed to mix a batch of material is not the same for all manufacturers b. At the =0.05 level of significance, use Fisher's LSD procedure to test for the equality of the means for manufacturers 1 and 3