Plot the mean breaking strength for eachmachine

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Reference no: EM13338077

The qulity control director for a clothing manufacturer wantsto syudy the effect of machines on the breaking strength (inpounds) of wool serge materials. A batch of the materials iscut into square-yard pieces and these are randomly assigned 12 each, to the three machines choses specifically for the experiment.
                                    Machine
I                           II                               III
115                       111                             109
115                      108                              110
119                      114                             107
117                      105                              110
114                       102                             113
114                      106                             114
109                      100                             103
110                       103                              102
106                      101                             105
112                      105                              108
115                       107                             111
111                       107                             110
At the 0.05 level of significance:
a. Is there an effect that is dueto machine
b. Plot the mean breaking strength for eachmachine
c. If, appropriate use the Tukey-Kramer procedureto examine the differences among the machines.
d. What can you conclude about the effect of machines onbreakingstrength.

Reference no: EM13338077

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