A chemist wishes to test the effect of four chemical agents on the strength of a particular type of cloth. Because there might be variability from one bolt to another, the chemist decides to use a randomized block design, with the bolts of cloth considered as blocks. She selects five bolts and applies all four chemicals in random order to each bolt. The resulting tensile strengths follow. (one-way ANOVA) Bolt Chemical 1 2 3 4 5 1 50 45 51 48 44 2 50 44 52 49 47 3 52 45 55 50 45 4 50 48 52 52 46 (a) Analyze the data from this experiment (use α = 0.05) and draw appropriate conclusions. (b) Use the Tukey's test with α = 0.05 to make comparisons between pairs of means. (c) Use the Fisher LSD method with α = 0.05 to make comparisons between pairs of means.

A chemist wishes to test the effect of four chemical agents on the strength of a particular type of cloth. Because there might be variability from one bolt to another, the chemist decides to use a randomized block design, with the bolts of cloth considered as blocks. She selects five bolts and applies all four chemicals in random order to each bolt. The resulting tensile strengths follow. (one-way ANOVA) Bolt Chemical 1 2 3 4 5 1 50 45 51 48 44 2 50 44 52 49 47 3 52 45 55 50 45 4 50 48 52 52 46 (a) Analyze the data from this experiment (use α = 0.05) and draw appropriate conclusions. (b) Use the Tukey's test with α = 0.05 to make comparisons between pairs of means. (c) Use the Fisher LSD method with α = 0.05 to make comparisons between pairs of means.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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