Chapter 12 Extra Credit Quiz Fertilizer 70 69 65 69 50 40 45 40 47 42 45 43 48 5

Question

Chapter 12 Extra Credit Quiz Fertilizer 70 69 65 69 50 40 45 40 47 42 45 43 48 50 83 81 81 83 83 67 62 62 64 70 62 61 70 67 64 60 70 62 69 60 86 84 86 81 Above are the heights of Sunflowers that were treated with different Fertilizers. The farmer wants to know if there is a significant difference in mean growth based on Fertilizer. (use an alpha 0.05) Below is a partial ANOVA table Anova: Single Factor SUMMARY Sum 716 724 924 494 Count Groups Fertilizer 1 Fertilizer 2 Fertilizer3 Fertilizer 4 Average Variance 65.0909091 10.29091 65.8181818 15.16364 84 44.9090909 12.69091 ANOVA Source of Variation Between Groups Within Groups SS 8418.45 MS F crit Total 8869.91 Is there a difference between Fertilizers? Develop a confidence Interval for Fertilizer 1 and 3. Is there a difference? How do you know? Page lof 2

Explanation / Answer

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ANOVA Source of Variation SS df MS F P-value F crit Between Groups 8418.454545 3 2806.152 248.632 6.82E-26 2.838745 Within Groups 451.4545455 40 11.28636 Total 8869.909091 43

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