TABLE 10-19
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.

-Referring to Table 10-19, the test is valid only if the population of crop yields is normally distributed for the three varieties.

Question

TABLE 10-19
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.
 
-Referring to Table 10-19, the test is valid only if the population of crop yields is normally distributed for the three varieties.

Quizplus · Accepted Answer

The test is valid only if the population of crop yields is normally distributed for the three varieties. This implies that the data should be normally distributed for each variety as well. Therefore, the assumption of normal distribution must be met for the test to be valid.

TABLE 10-19 An Agronomist Wants to Compare the Crop Yield of 3