Exercise 13.15 Algo (Multiple Comparison Procedures) Question 1 UflO . Hint(s} Check My Work To test whether the mean time needed to mix a batch of material is the same for machines produced by three manufacturers, the Jacobs Chemical Company obtained the following data on the time (in minutes) needed to mix the material. Manufacturer 1 2 3 25 31 20 3]. 29 19 29 34 23 27 30 22 a. Use these data to test whether the popuiation mean times for mixing a batch of material diFFer for the three manufacturers. Use a = 0.05. Compute the values below (to 2 decimais, if necessary). Sum of Squares, Treatment 0 Sum of Squares, Error 0 Mean Squares, Treatment 0 Mean Squares, Error 0 Calcuiate the vaiue of the test statistic {to 2 decimals). m........._@ What is your conclusion? Conclude the mean lime needed to mix a balcll of material is not the same for all manufacturers v i @ Is. At the a = 0.05 ievel of significance, use Fisher's LSD procedure to test for the equality ofthe means for manufacturers 1 and 3. Calcuiate Fisher's LSD Value [to 2 decimals). 0 What conclusion can you draw after carrying out this test'? These manufacturers have different mean limes v i @