Refer to the study described in Exercise 14.8. Determine the number of replications needed to obtain an α = .05 test having power of at least 80% that detects a difference of 10 in any pair of treatment means. Use the data from Exercise 14.8 to estimate the value of σ2e.
Answer to relevant QuestionsRefer 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 = ...An experiment was set up to compare the effects of different soil pH and calcium additives on the increase in trunk diameters for orange trees. Elemental sulfur, gypsum, soda ash, and other ingredients were applied annually ...Refer to Exercise 14.1. After running the pilot study, the researchers conduct a study involving 100 students. Twenty- five students were randomly assigned to each of the four instructional conditions. The data are given ...Refer to Exercise 14.36. a. Are the computational formulas for obtaining the sum of squares appropriate for the data in the tomato experiment? Justify your answer. b. Verify that there are no major violations in the ...Refer to Exercise 14.8. a. Draw a profile plot for the two factors, age and product type. b. Perform appropriate F tests and draw conclusions from these tests concerning the effects of age and product type on the mean ...
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