A consumer interest group is interested in comparing the speed of four different desktop printers; four different documents are used for the experiment.Each test consists of randomly assigning one printer to one of the documents.The document is printed and the time to print in seconds is recorded.Each printer/document combination is tested.Calculate MST,MSE and the F-ratio.Can you reject H0 using α = 0.05? The ANOVA table is listed below. Analysis of Variance
Source Sum-of-Squares df Mean-Square F-ratio P-value
Printer 4.862
Error 3.150
Total 8.012
A) MST = 1.216; MSE = 0.210; F-Ratio = 5.790; No,do not reject H0 using α = 0.05.
B) MST = 1.621; MSE = 0.263; F-Ratio = 6.163; Yes,reject H0 using α = 0.05.
C) MST = 1.621; MSE = 0.210; F-Ratio = 7.719; Yes,reject H0 using α = 0.05.
D) MST = 1.216; MSE = 0.263; F-Ratio = 4.641; No,do not reject H0 using α = 0.05.
E) MST = 1.621; MSE = 0.242; F-Ratio = 6.698; Yes,reject H0 using α = 0.05.
Correct Answer:
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