Question 20 The means of the tomato yields under the four mulching conditions are represented by 111, 112, u3, :44. We will conduct a hypothesis test to determine if all means are the same or at least one is different. Using a signicance level of 5%. test the null hypothesis that there IS no difference in mean yields among the four groups against the alternative hypothesis that at least one mean is different from the rest. l Degrees of Squares Freedom 20 446 726 15 s 10 2044672\" 10 l I = 2.0446726 What is the degree of freedom for the variation between means? 77777 Source of Sum of Variation 36.648.561/ 4 9.162.140] 2.044.672}: = 9.162.140 Factor (Between) Error (Within) What is the degree of freedom for the variation within means'hr Probability Statement: p-value=P(F> ______ 1:0,0248 Make a decision: Conclusion