# Question: Refer to the study described in Exercise 14 11 Suppose a

Refer to the study described in Exercise 14.11. Suppose a new study is to be designed in which only three levels of milk fat and three levels of air will be used. Determine the number of replications needed to obtain an α = .05 test having a power of at least 90% that detects a difference of 5 in any pair of treatment means. Use the data from Exercise 14.11 to estimate the value of σ2e.

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