Let X and Y denote the heights of blue spruce trees, measured in centimeters, growing in two large fields. We shall compare these heights by measuring 12 trees selected at random from each of the fields. Take a ≈ 0.05, and use the statistic W-the sum of the ranks of the observations of Y in the combined sample-to test the hypothesis Ho: mx = my against the alternative hypoth- esis H₁: mx < my on the basis of the following n₁ = 12 observations of X and n₂ = 12 observations of Y. x: 90.4 77.2 75.9 83.2 84.0 90.2 87.6 67.4 77.6 69.3 83.3 72.7 y: 92.7 78.9 82.5 88.6 95.0 94.4 73.1 88.3 90.4 86.5 84.7 87.5

Let X and Y denote the heights of blue spruce trees, measured in centimeters, growing in two large fields. We shall compare these heights by measuring 12 trees selected at random from each of the fields. Take a ≈ 0.05, and use the statistic W-the sum of the ranks of the observations of Y in the combined sample-to test the hypothesis Ho: mx = my against the alternative hypoth- esis H₁: mx < my on the basis of the following n₁ = 12 observations of X and n₂ = 12 observations of Y. x: 90.4 77.2 75.9 83.2 84.0 90.2 87.6 67.4 77.6 69.3 83.3 72.7 y: 92.7 78.9 82.5 88.6 95.0 94.4 73.1 88.3 90.4 86.5 84.7 87.5

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 1GP

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