TABLE 12-2
An agronomist wants to compare the crop yield of 3 varieties of chickpea seeds. She plants all 3 varieties of the seeds on each of 5 different patches of fields. She then measures the crop yield in bushels per acre. Treating this as a randomized block design, the results are presented in the table that follows.
-Referring to Table 12-2, the null hypothesis for the Friedman rank test for the difference in the means should be rejected at a 0.01 level of significance.

Question

TABLE 12-2
An agronomist wants to compare the crop yield of 3 varieties of chickpea seeds. She plants all 3 varieties of the seeds on each of 5 different patches of fields. She then measures the crop yield in bushels per acre. Treating this as a randomized block design, the results are presented in the table that follows. 
-Referring to Table 12-2, the null hypothesis for the Friedman rank test for the difference in the means should be rejected at a 0.01 level of significance.

Quizplus · Accepted Answer

The Friedman rank test is used to analyze data from randomized block designs with dependent samples. The null hypothesis is that there is no difference in the means of the groups. The alternative hypothesis is that at least one group has a different mean. The p-value obtained from the test is compared to the level of significance to determine if the null hypothesis should be rejected. In this case, we do not have access to the p-value, but if it is less than 0.01, then the null hypothesis would be rejected at a 0.01 level of significance. Therefore, we cannot definitively say whether the null hypothesis should be rejected or not based solely on the information given, but it is possible that it should be rejected.

TABLE 12-2 An Agronomist Wants to Compare the Crop Yield of 3