Assume that the data values in this problem come from independent populations and that each population follows a normal distribution. Rothamsted Experimental Station (England) has studied wheat production since 1852. Each year, many small plots of equal size but different soil/fertilizer conditions are planted with wheat. At the end of the growing season, the yield (in pounds) of the wheat on the plot is measured. For a random sample of years, one plot gave the following annual wheat production (in pounds). 4.14 4.24 4.24 3.58 3.55 3.82 4.08 4.37 3.92 3.82 4.17 3.10 4.89 2.93 4.98 3.34 Use a calculator to verify that, for this plot, the sample variance is s2 ≈ 0.3238.
Assume that the data values in this problem come from independent populations and that each population follows a normal distribution.
Rothamsted Experimental Station (England) has studied wheat production since 1852. Each year, many small plots of equal size but different soil/fertilizer conditions are planted with wheat. At the end of the growing season, the yield (in pounds) of the wheat on the plot is measured. For a random sample of years, one plot gave the following annual wheat production (in pounds).
4.14 4.24 4.24 3.58 3.55 3.82 4.08 4.37 3.92 3.82 4.17 3.10 4.89 2.93 4.98 3.34
Use a calculator to verify that, for this plot, the sample variance is s2 ≈ 0.3238.
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