webassign7_ioe366.pdf - Assignment Previewer Webassign Assignment 7(9933466 Current Score Question Points 0\/66.5 Due Tue Dec 3 2019 03:00 PM EST 1 2 3 4

# webassign7_ioe366.pdf - Assignment Previewer Webassign...

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12/1/2019Assignment Previewer1/9QuestionPoints12340/160/11.50/16.50/22.5Total0/66.5Webassign Assignment 7 (9933466)Current Score:0/66.5Due:Tue, Dec 3, 2019 03:00 PM EST
12/1/2019Assignment Previewer2/91.-0/16 pointsDevoreStat9 11.E.002. [4060849]Four different coatings are being considered for corrosion protection of metal pipe. The pipe will be buried in three differenttypes of soil. To investigate whether the amount of corrosion depends either on the coating or on the type of soil, 12 piecesof pipe are selected. Each piece is coated with one of the four coatings and buried in one of the three types of soil for afixed time, after which the amount of corrosion (depth of maximum pits, in 0.0001 in.) is determined. The data appears inthe table.Soil Type (B)1 2 3 Coating (A)1 614751253524734745504504051(a) Assuming the validity of the additive model, carry out the ANOVA analysis using an ANOVA table to see whetherthe amount of corrosion depends on either the type of coating used or the type of soil.State the appropriate hypotheses for the coating effect.State the appropriate hypotheses for the soil type factor.Complete the ANOVA table. Use α= 0.05. (Round your answers to two decimal places.)SourcedfSSMSfF0.05ABErrorTotalWhat can you conclude for H0A?H0A: α1α2α3α4HaA: all αi's = 0H0A: α1α2α3α4HaA: at least one αi= 0 H0A: α1= α2= α3= α4= 0HaA: no αi= 0H0A: α1= α2= α3= α4= 0HaA: at least one αi0H0B: β1= β2= β3= 0HaB: at least one βj0H0B: β1β2β3HaB: at least one βj= 0 H0B: β1= β2= β3= 0HaB: no βj= 0H0B: β1β2β3HaB: all βj's are equalࡣ?373.6724561234762915045.752295.146119.8319971125.00
12/1/2019Assignment Previewer3/9What can you conclude for H0B?(b) Compute the model parameters. (Round your answers to two decimal places.)= 1= 2= 3= 4= 1= 2= 3= You may need to use the appropriate table in the Appendix of Tables to answer this question.Reject H0A. The data suggests that there is a coating effect.Reject H0A. The data does not suggest that there is a coating effect.

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