An experiment was performed to look at the reflectivity of different paints used

Question

An experiment was performed to look at the reflectivity of different paints used on roads. Four paints were used (call them Paint 1, Paint 2, Paint 3, and Paint 4). Twenty-four sections of roads with similar travel patterns and weather patterns were used. Each type of paint was randomly assigned to one of the 24 sections of re so that each paint type was used on 6 different road sections. The percent of reflectivity after 6 months was determined and recorded. Which of the following can w conclude based on the F-test? Click the icon to view part of the Analysis of Variance table Choose the correct answer below A. There is conclusive evidence to indicate that at least one paint type is a significant predictor of reflectivity 6 months later ( B. There is conclusive evidence to indicate that all paint types have different mean reflectivity 6 months later ° C. There is conclusive evidence to indicate that at least one paint type has a different mean reflectivity 6 months later than the other paint types D. There is conclusive evidence to indicate that all paint types have the same mean reflectivity 6 months later E. There is not enough evidence to indicate that all paint types have different mean reflectivity 6 months later iPart of the Analysis of Variance Table DF MS Source Paint 7.43 0.002 rror Total 1645.3 S=6.237 R-Sq = 52.71% Click to select your answer PrintDone

Explanation / Answer

Here, p-value of F-test is 0.002 < 0.05 , therefore we reject H0 at 5% level of significance .

Hence , answer of this question is option C.

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