Two plots at Rothamsted Experimental Station were studied for production of wheat straw. For a random sample of ycars, the annual wheat straw production (in pounds) from one plot was as follows. 6.40 7.03 7.17 6,96 7.31 7.18 7.06 5.79 6.24 5.91 6.14 Use a calculator to verify that, for this plot, the sampie variance is s2 0.317, Another random sample of years for a second plot gave the following annual wheat production (in pounds). 7.10 7.03 8.15 5.91 7,22 5.58 547 5.86 Use a calculator to verify that the sample varlance for this piot is s? 0.933, Test the claim that there is a difference (either way) in the population variance of wheat straw production for these two plots, Use a 5% level of signifcance. (a) What is the level of significance? O 05 State the nuli and aiternate hypetheses. O H 0 > 0,, ,0 -, (b) Find the value of the sample/ statistic. (Use 2 decimal places.) What are the degrees of freedom? df dfo What assumptions are you making about the original distr bution? O The populations folluw independent normal distrbutions. We have random samples trom each population. O The populations follow independent chi-square distributions. We have randon samples Irom eeth pepulatien.
Two plots at Rothamsted Experimental Station were studied for production of wheat straw. For a random sample of ycars, the annual wheat straw production (in pounds) from one plot was as follows. 6.40 7.03 7.17 6,96 7.31 7.18 7.06 5.79 6.24 5.91 6.14 Use a calculator to verify that, for this plot, the sampie variance is s2 0.317, Another random sample of years for a second plot gave the following annual wheat production (in pounds). 7.10 7.03 8.15 5.91 7,22 5.58 547 5.86 Use a calculator to verify that the sample varlance for this piot is s? 0.933, Test the claim that there is a difference (either way) in the population variance of wheat straw production for these two plots, Use a 5% level of signifcance. (a) What is the level of significance? O 05 State the nuli and aiternate hypetheses. O H 0 > 0,, ,0 -, (b) Find the value of the sample/ statistic. (Use 2 decimal places.) What are the degrees of freedom? df dfo What assumptions are you making about the original distr bution? O The populations folluw independent normal distrbutions. We have random samples trom each population. O The populations follow independent chi-square distributions. We have randon samples Irom eeth pepulatien.
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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