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The following table shows the results of a two-factor analys…

The following table shows the results of a two-factor analysis of variance with two levels of factor A, three levels of factor B, and a separate sample of 5 participants in each of the treatment conditions.  Note that several values are missing in the table.  What is the missing value for the F-ratio for the A x B interaction?Source           SS       df      MS      Between        80     xx          A                       8      xx      xx    F =   xx    B                     xx      xx      20    F =  xx    AxB               xx      xx      xx    F =  xxWithin             xx        x      xx     Total              176      xx          

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A student investigated how washing with soap affects bacteri…

A student investigated how washing with soap affects bacteria levels on the hands. She tested three different methods—washing with water only, washing with regular soap, and washing with antibacterial soap. She randomly assigned 99 students to 1 of the 3 treatments. Participants washed their hands with the assigned method and cultures were taken and incubated. Based on the SPSS output below, was there a significant difference among the three hand-washing methods and why?

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