16.21 • The given data on phosphorus concentration intopsoil for four different soil treatments appeared in thearticle "Fertilisers for Lotus and Clover Establishmentson a Sequence of Acid Soils on the East Otago Up-lands" (New Zealand Journal of Experimental Agricul-ture [1984): 119-129). Use the KW test and a .01significance level to test the null hypothesis of no differ-ence in true mean phosphorus concentration for the foursoil treatments. TreatmentConcentration (mg/g)8.15.97.08.09.0II11.510.912.110.311.9II15.317.416.415.816.0IV23.033.028.424.627.7

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Description: 16.21 • The given data on phosphorus concentration intopsoil for four different soil treatments appeared in thearticle "Fertilisers for Lotus and Clover Establishmentson a Sequence of Acid Soils on the East Otago Up-lands" (New Zealand Journal of Ex

The motive is to compare the 4 soil treatment with respect to the mean phosphorus concentration in…

Answered: ture [1984): 119–129). Use the KW test…

Math

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ture [1984): 119–129). Use the KW test and a .01 significance level to test the null hypothesis of no differ- ence in true mean phosphorus concentration for the four soil treatments.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The calculated value for your Chi Square crosstabulation comes in at 9.888. The test has 4 degrees of freedom. Given a .05 alpha level, would you reject the null hypothesis? What is the minimum calculated value necessary to reach the .01 alpha level with 3 degrees of freedom in a Chi-Square cross-tabulation?
17.34 (EX) Oligofructose and calcium absorption 1/6: Nondigestible oligosaccharides are known to stimulate calcium absorption in rats. A double-blind, randomized experiment investigated whether the consumption of oligofructose similarly stimulates calcium absorption in healthy male adolescents 14 to 16 years old. The subjects took a pill for nine days and had their calcium absorption tested on the last day. The experiment was repeated three weeks later. Some subjects received the oligofructose pill in the first round and then a pill containing sucrose (which served as a control). The order was switched for the remaining subjects. Here are the fractional calcium absorption data (in percent of intake) for 11 subjects: Subject Control 1 2 3 4 5 6 7 8 9 10 11 78.4 76.6 57.4 51.5 49.0 46.6 44.2 42.9 37.2 34.1 24.6 Oligofructose 62.0 95.1 46.5 49.4 89.7 43.8 50.3 51.6 66.6 52.7 54.0 Explain clearly why the matched pairs t test is the proper choice for this experimental design. O Because this…
10.20 In a random sample of recent high school graduates, two characteristics were recorded (the average score and the number of correct answers for the SAT test). This information was classified as shown in Table 10.8. Is there a dependence between the number of correct answers on the SAT test and the average rankings statistically discernible at a level α = 0.01?