Assignment_Solution_Chp._14

# Assignment_Solution_Chp._14 - Chapter 14 Solutions 14.1 A...

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1 Chapter 14 – Solutions 14.1. A rocket propellant manufacturer is studying the burning rate of propellant from three production processes. Four batches of propellant are randomly selected from the output of each process and three determinations of burning rate are made on each batch. The results follow. Analyze the data and draw conclusions. Process 1 Process 2 Process 3 Batch 1 2 3 4 1 2 3 4 1 2 3 4 25 19 15 15 19 23 18 35 14 35 38 25 30 28 17 16 17 24 21 27 15 21 54 29 26 20 14 13 14 21 17 25 20 24 50 33 Minitab Output ANOVA: Burn Rate versus Process, Batch Factor Type Levels Values Process fixed 3 1 2 3 Batch(Process) random 4 1 2 3 4 Analysis of Variance for Burn Rat Source DF SS MS F P Process 2 676.06 338.03 1.46 0.281 Batch(Process) 9 2077.58 230.84 12.20 0.000 Error 24 454.00 18.92 Total 35 3207.64 Source Variance Error Expected Mean Square for Each Term component term (using restricted model) 1 Process 2 (3) + 3(2) + 12Q[1] 2 Batch(Process) 70.64 3 (3) + 3(2) 3 Error 18.92

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Assignment_Solution_Chp._14 - Chapter 14 Solutions 14.1 A...

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