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Question: Three varieties of potatoes are being compared

Three varieties of potatoes are being compared for yield. The experiment is conducted by assigning each variety at random to one of 3 equal-size plots at each of 4 different locations. The following yields for varieties A, B, and C, in 100 kilograms per plot, were recorded:
Three varieties of potatoes are being compared for yield. The experiment is conducted by assigning each variety at random to one of 3 equal-size plots at each of 4 different locations. The following yields for varieties A, B, and C, in 100 kilograms per plot, were recorded: 


Perform a randomized complete block analysis of variance to test the hypothesis that there is no difference in the yielding capabilities of the 3 varieties of potatoes. Use a 0.05 level of significance. Draw conclusions.

Perform a randomized complete block analysis of variance to test the hypothesis that there is no difference in the yielding capabilities of the 3 varieties of potatoes. Use a 0.05 level of significance. Draw conclusions.





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Location 1 Location 2 Location 3 Location 4 C: 21 A: 20 B: 23 C: 9 B: 12 A: 14 A: 11 C: 10 В: 17 B: 13 А: 18 C: 12


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> Consider the data set in Exercise 14.12 and answer the following questions. (a) Both factors, copper and time, are quantitative in nature. As a result, a regression model may be of interest. Describe what might be an appropriate model using x1 = copper c

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> Use Bartlett’s test at the 0.01 level of significance to test for homogeneity of variances in Exercise 13.5 on page 519. Exercise 13.5:

> For the data set in Exercise 13.7, use Bartlett’s test to check whether the variances are equal. Use α = 0.05. Exercise 13.7: It has been shown that the fertilizer magnesium ammonium phosphate, MgNH4PO4, is an effective s

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2.99

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