TABLE 11-4 An Agronomist Wants to Compare the Crop Yield of 3

question 8

True/False

TABLE 11-4
An agronomist wants to compare the crop yield of 3 varieties of chickpea seeds. She plants 15 fields, 5 with each variety. She then measures the crop yield in bushels per acre. Treating this as a completely randomized design, the results are presented in the table that follows.
Trial Smith Walsh Trevor
1 11.1 19.0 14.6
2 13.5 18.0 15.7
3 15.3 19.8 16.8
4 14.6 19.6 16.7
5 9.8 16.6 15.2
-Referring to Table 11-4, the test is valid only if the population of crop yields has the same variance for the 3 varieties.

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The increase in expense a business incurs by manufacturing one more unit of an item.