Alimula Company Ltd. wants to know if there is consistency in their operations.  They want to know if the thickness of the insulation which covers three bands A, B and C wires which are now competing in the market have similar means. Using a sample of five randomly selected pieces of wire for each brand and carefully measuring the thickness of the insulation in millimetres (mm) the following results were obtained:-    brand A       brand B    brand C 4.8                 4.5           4.0 4.7                 4.9           4.8 3.9                  3.8          5.2 4.2                   5.5          4.9 4.4                  4.7          4.5 22.0              23.4           23.4 Calculate the total sum of squares error, (SST )                                                                                              Calculate the between sample sum of squares error, (SSB )                                                                          Calculate the within sample sum of the squares error, (SSW )                                                                       Calculate the between sample mean square error, (MSB )                                                                             Calculate the within sample mean square error, (MSW )                                                                                 State the null (H0) and alternative (H1) hypothesis and calculate the F-value from the test.

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 6E: List the sample space of each experiment. Tossing three coins
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Alimula Company Ltd. wants to know if there is consistency in their operations.  They want to know if the thickness of the insulation which covers three bands A, B and C wires which are now competing in the market have similar means. Using a sample of five randomly selected pieces of wire for each brand and carefully measuring the thickness of the insulation in millimetres (mm) the following results were obtained:-   

brand A       brand B    brand C

4.8                 4.5           4.0

4.7                 4.9           4.8

3.9                  3.8          5.2

4.2                   5.5          4.9

4.4                  4.7          4.5

22.0              23.4           23.4

  1. Calculate the total sum of squares error, (SST )                                                                                             
  2. Calculate the between sample sum of squares error, (SSB )                                                                         
  3. Calculate the within sample sum of the squares error, (SSW )                                                                      
  4. Calculate the between sample mean square error, (MSB )                                                                            
  5. Calculate the within sample mean square error, (MSW )                                                                                
  6. State the null (H0) and alternative (H1) hypothesis and calculate the F-value from the test.                         
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