1. You ask her what was the experimental unit and were theexperimental units randomized. She is unfamiliar with theseconcepts. Please explain experimental unit and the need forrandomization of the experimental units to the treatmentcombinations to her.

1. You decide to analyze the experiment as a 3 X 3 factorialarrangement using a completely randomized design and obtain thefollowing ANOVA tables.

Analysis of Variance Table

Response: diastolic

          Df Sum SqMean Sq F value   Pr(>F)  

diet       2 322.83 161.42 4.20550.032819 *

drug       2 811.06 405.53 10.56550.001042 **

diet:drug 4 155.76   38.94 1.01450.427585  

Residuals 17 652.50  38.38                   

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Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’1

Anova Table (Type II tests)

Response: diastolic

          Sum Sq DfF value   Pr(>F)  

diet      379.50 2 4.9437 0.020307*

drug      811.06 2 10.5655 0.001042**

diet:drug 155.76 4 1.0145 0.427585  

Residuals 652.5017                   

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Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’1

Anova Table (Type III tests)

Response: diastolic

           Sum Sq Df   F value   Pr(>F)   

(Intercept) 185050 1 4821.2144 < 2.2e-16 ***

diet          375 2    4.8838 0.021093 *

drug          796 2   10.3735 0.001136 **

diet:drug      156 4   1.0145 0.427585   

Residuals      65217                       

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Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’1

a. For this analysis, which of the SS methods would youchoose? Explain why?

b. The lack of a sign diet X drug interaction indicates__________________?