Answer Happy

Exercise 13.15 Algo (Multiple Comparison Procedures) 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. Compute the values below (to 2 decimals, if necessary). Sum of Squares, Treatment Sum of Squares, Error Mean Squares, Treatment 1 25 31 29 27 Mean Squares, Error Calculate the value of the test statistic (to 2 decimals). 0.05. a. Use these data to test whether the population mean times for mixing a batch of material differ for the three manufacturers. Use a = The p-value is less than 0.01 What is your conclusion? Manufacturer 2 29 27 32 28 What conclusion can you draw after carrying out this test? These manufacturers have different mean times ◆ Question 9 of 10 ► 3 16 15 19 18 Hint(s) Check My Work Conclude the mean time needed to mix a batch of material is not the same for all manufacturers b. At the a = 0.05 level of significance, use Fisher's LSD procedure to test for the equality of the means for manufacturers 1 and 3. Calculate Fisher's LSD Value (to 2 decimals).