Two plots at Rothamsted Experimental Station were studied for production of wheat straw. For a random sample of years, the annual wheat straw production (in pounds) from one plot was as follows. 5.84 6.96 6.26 6.12 7.31 7.18 7.06 5.79 6.24 5.91 6.14Use a calculator to verify that, for this plot, the sample variance is s2 ≈ 0.329. Another random sample of years for a second plot gave the following annual wheat production (in pounds). 7.10 7.52 8.01 7.45 7.22 5.58 5.47 5.86Use a calculator to verify that the sample variance for this plot is s2 ≈ 0.973. 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? (b) Find the value of the sample F statistic. (Use 2 decimal places.) What are the degrees of freedom? dfN dfD
Two plots at Rothamsted Experimental Station were studied for production of wheat straw. For a random sample of years, the annual wheat straw production (in pounds) from one plot was as follows. 5.84 6.96 6.26 6.12 7.31 7.18 7.06 5.79 6.24 5.91 6.14Use a calculator to verify that, for this plot, the sample variance is s2 ≈ 0.329. Another random sample of years for a second plot gave the following annual wheat production (in pounds). 7.10 7.52 8.01 7.45 7.22 5.58 5.47 5.86Use a calculator to verify that the sample variance for this plot is s2 ≈ 0.973. 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? (b) Find the value of the sample F statistic. (Use 2 decimal places.) What are the degrees of freedom? dfN dfD
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Two plots at Rothamsted Experimental Station were studied for production of wheat straw. For a random sample of years, the annual wheat straw production (in pounds) from one plot was as follows.
Use a calculator to verify that, for this plot, the sample variance is s2 ≈ 0.329.
Another random sample of years for a second plot gave the following annual wheat production (in pounds).
Use a calculator to verify that the sample variance for this plot is s2 ≈ 0.973.
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.
| 5.84 | 6.96 | 6.26 | 6.12 | 7.31 | 7.18 |
| 7.06 | 5.79 | 6.24 | 5.91 | 6.14 |
Another random sample of years for a second plot gave the following annual wheat production (in pounds).
| 7.10 | 7.52 | 8.01 | 7.45 | 7.22 | 5.58 | 5.47 | 5.86 |
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?
(b) Find the value of the sample F statistic. (Use 2 decimal places.)
What are the degrees of freedom?
What are the degrees of freedom?
| dfN | |
| dfD |
|
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