An experment was performed to lock at the neflectivity of different pasins used

Question

An experment was performed to lock at the neflectivity of different pasins used on roads Four paints were used (call them Paint 1, Paint 2 Paint 3, and Paint 4). Twenty-four sections of roads with simlar travel pattoms and h es wne used Each tyce dl paint was randomily sssigned to one of the 24 sactions df nouad so that each pant type ws used on 6 délenent road sections. The percent df efectvity after 6 moréhs ws Oick the icon to view part of the Analysis of Vaiance table Choose the comect answer below recoded Bec.ause the pvalae from the F-test is so low what shouild be done? Stop tw anwyses tecane we know th. least one par, type has aaneert mean reflectivty, ba there no wy to detemre which one or ones have diffe ert means OB Stop the analysis becane the F-test says that all paint types have dfferent means Because they ave all diferent, there is nsthing more to dh CPefom a multiple comparison method to determine which paint type or paint types have dferent men rflectivity Souce F SS MS Pant Enor Total 743 0002 1645 3 S-6237 RSq:52 71% Cick to select your anwer and then click Check Ae PrintDone

Explanation / Answer

Since we are rejecting the null hypothesis in F test, we are concluding that at least one mean is different from others and hence, we have to apply the multiple comparison method.

Option C is correct.

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